- Timestamp:
- Oct 23, 2018 8:57:35 AM (5 years ago)
- Location:
- Tutorials/Magnetic-III
- Files:
-
- 3 added
- 25 edited
Legend:
- Unmodified
- Added
- Removed
-
Tutorials/Magnetic-III/Magnetic-III.htm
r3642 r3700 23 23 <o:Author>Von Dreele</o:Author> 24 24 <o:LastAuthor>vondreele</o:LastAuthor> 25 <o:Revision>2 0</o:Revision>26 <o:TotalTime> 589</o:TotalTime>25 <o:Revision>22</o:Revision> 26 <o:TotalTime>763</o:TotalTime> 27 27 <o:Created>2012-05-05T14:50:00Z</o:Created> 28 <o:LastSaved>2018-10- 03T19:22:00Z</o:LastSaved>28 <o:LastSaved>2018-10-23T13:56:00Z</o:LastSaved> 29 29 <o:Pages>1</o:Pages> 30 <o:Words>21 87</o:Words>31 <o:Characters>12 468</o:Characters>32 <o:Lines>10 3</o:Lines>33 <o:Paragraphs>2 9</o:Paragraphs>34 <o:CharactersWithSpaces>14 626</o:CharactersWithSpaces>30 <o:Words>2118</o:Words> 31 <o:Characters>12074</o:Characters> 32 <o:Lines>100</o:Lines> 33 <o:Paragraphs>28</o:Paragraphs> 34 <o:CharactersWithSpaces>14164</o:CharactersWithSpaces> 35 35 <o:Version>16.00</o:Version> 36 36 </o:DocumentProperties> … … 40 40 <!--[if gte mso 9]><xml> 41 41 <w:WordDocument> 42 <w:Zoom>108</w:Zoom>43 42 <w:SpellingState>Clean</w:SpellingState> 44 43 <w:GrammarState>Clean</w:GrammarState> … … 1293 1292 vector. If you have not done so already, you may wish to do the Simple Magnetic 1294 1293 Structures tutorial first as it contains some background information that will 1295 not be covered here. It is also helpful to do parts I and II of the series of 1296 Magnetic Structures tutorials. To make this work, your computer must have an 1297 internet connection for GSAS-II to access this site. (We will supply the 1298 project file that results after k-SUBGROUPSMAG is called in case you lack 1299 internet access).</p> 1294 not be covered here. It is also helpful to do parts I and II of the series of Magnetic 1295 Structures tutorials. To make this work, your computer must have an internet 1296 connection for GSAS-II to access this site. (We will supply the project file 1297 that results after k-SUBGROUPSMAG is called in case you lack internet access).</p> 1300 1298 1301 1299 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shapetype … … 1319 1317 <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/> 1320 1318 <o:lock v:ext="edit" aspectratio="t"/> 1321 </v:shapetype><v:shape id="Picture_x0020_4" o:spid="_x0000_i105 5" type="#_x0000_t75"1319 </v:shapetype><v:shape id="Picture_x0020_4" o:spid="_x0000_i1052" type="#_x0000_t75" 1322 1320 style='width:359.25pt;height:369pt;visibility:visible;mso-wrap-style:square'> 1323 1321 <v:imagedata src="Magnetic-III_files/image001.png" o:title=""/> … … 1427 1425 1428 1426 <p class=MsoListParagraphCxSpLast><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1429 id="Picture_x0020_5" o:spid="_x0000_i105 4" type="#_x0000_t75" style='width:324pt;1427 id="Picture_x0020_5" o:spid="_x0000_i1051" type="#_x0000_t75" style='width:324pt; 1430 1428 height:199.5pt;visibility:visible;mso-wrap-style:square'> 1431 1429 <v:imagedata src="Magnetic-III_files/image003.png" o:title=""/> … … 1437 1435 1438 1436 <p class=MsoNormal style='margin-left:.5in'><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1439 id="Picture_x0020_6" o:spid="_x0000_i105 3" type="#_x0000_t75" style='width:324.75pt;1437 id="Picture_x0020_6" o:spid="_x0000_i1050" type="#_x0000_t75" style='width:324.75pt; 1440 1438 height:335.25pt;visibility:visible;mso-wrap-style:square'> 1441 1439 <v:imagedata src="Magnetic-III_files/image005.png" o:title=""/> … … 1497 1495 The General tab for the phase is shown next<br> 1498 1496 <span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_7" 1499 o:spid="_x0000_i10 52" type="#_x0000_t75" style='width:322.5pt;height:176.25pt;1497 o:spid="_x0000_i1049" type="#_x0000_t75" style='width:322.5pt;height:176.25pt; 1500 1498 visibility:visible;mso-wrap-style:square'> 1501 1499 <v:imagedata src="Magnetic-III_files/image007.png" o:title=""/> 1502 1500 </v:shape><![endif]--><![if !vml]><img border=0 width=430 height=235 1503 src="Magnetic-III_files/image0 57.gif" v:shapes="Picture_x0020_7"><![endif]></span></p>1501 src="Magnetic-III_files/image028.gif" v:shapes="Picture_x0020_7"><![endif]></span></p> 1504 1502 1505 1503 <h3>Step 3. Check powder pattern indexing</h3> … … 1513 1511 histogram (begins with PWDR); the Indexing controls will be shown<br> 1514 1512 <span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_8" 1515 o:spid="_x0000_i10 51" type="#_x0000_t75" style='width:359.25pt;height:121.5pt;1513 o:spid="_x0000_i1048" type="#_x0000_t75" style='width:359.25pt;height:121.5pt; 1516 1514 visibility:visible;mso-wrap-style:square'> 1517 1515 <v:imagedata src="Magnetic-III_files/image009.png" o:title=""/> 1518 1516 </v:shape><![endif]--><![if !vml]><img border=0 width=479 height=162 1519 src="Magnetic-III_files/image05 8.gif" v:shapes="Picture_x0020_8"><![endif]></span></p>1517 src="Magnetic-III_files/image057.gif" v:shapes="Picture_x0020_8"><![endif]></span></p> 1520 1518 1521 1519 <p class=MsoNormal>This can use lattice parameters & space groups to … … 1540 1538 and the Indexing controls will be change<br> 1541 1539 <span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_9" 1542 o:spid="_x0000_i10 50" type="#_x0000_t75" style='width:357.75pt;height:114pt;1540 o:spid="_x0000_i1047" type="#_x0000_t75" style='width:357.75pt;height:114pt; 1543 1541 visibility:visible;mso-wrap-style:square'> 1544 1542 <v:imagedata src="Magnetic-III_files/image011.png" o:title=""/> 1545 1543 </v:shape><![endif]--><![if !vml]><img border=0 width=477 height=152 1546 src="Magnetic-III_files/image05 9.gif" v:shapes="Picture_x0020_9"><![endif]></span></p>1544 src="Magnetic-III_files/image058.gif" v:shapes="Picture_x0020_9"><![endif]></span></p> 1547 1545 1548 1546 <p class=MsoNormal><span class=GramE>showing</span> the lattice constants for … … 1567 1565 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1568 1566 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin;mso-no-proof: 1569 yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_10" o:spid="_x0000_i104 9"1567 yes'><!--[if gte vml 1]><v:shape id="Picture_x0020_10" o:spid="_x0000_i1046" 1570 1568 type="#_x0000_t75" style='width:354.75pt;height:366pt;visibility:visible; 1571 1569 mso-wrap-style:square'> 1572 1570 <v:imagedata src="Magnetic-III_files/image013.png" o:title=""/> 1573 1571 </v:shape><![endif]--><![if !vml]><img border=0 width=473 height=488 1574 src="Magnetic-III_files/image0 60.gif" v:shapes="Picture_x0020_10"><![endif]></span></b></p>1572 src="Magnetic-III_files/image059.gif" v:shapes="Picture_x0020_10"><![endif]></span></b></p> 1575 1573 1576 1574 <p class=MsoNormal>Ive expanded & shifted the plot slightly to see that a … … 1603 1601 1604 1602 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1605 id="Picture_x0020_11" o:spid="_x0000_i104 8" type="#_x0000_t75" style='width:357pt;1603 id="Picture_x0020_11" o:spid="_x0000_i1045" type="#_x0000_t75" style='width:357pt; 1606 1604 height:114pt;visibility:visible;mso-wrap-style:square'> 1607 1605 <v:imagedata src="Magnetic-III_files/image015.png" o:title=""/> 1608 1606 </v:shape><![endif]--><![if !vml]><img border=0 width=476 height=152 1609 src="Magnetic-III_files/image06 1.gif" v:shapes="Picture_x0020_11"><![endif]></span></p>1607 src="Magnetic-III_files/image060.gif" v:shapes="Picture_x0020_11"><![endif]></span></p> 1610 1608 1611 1609 <p class=MsoNormal>Notice that the a-axis (11.2974) is now twice the original … … 1613 1611 1614 1612 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1615 id="Picture_x0020_12" o:spid="_x0000_i104 7" type="#_x0000_t75" style='width:356.25pt;1613 id="Picture_x0020_12" o:spid="_x0000_i1044" type="#_x0000_t75" style='width:356.25pt; 1616 1614 height:366.75pt;visibility:visible;mso-wrap-style:square'> 1617 1615 <v:imagedata src="Magnetic-III_files/image017.png" o:title=""/> 1618 1616 </v:shape><![endif]--><![if !vml]><img border=0 width=475 height=489 1619 src="Magnetic-III_files/image06 2.gif" v:shapes="Picture_x0020_12"><![endif]></span></p>1617 src="Magnetic-III_files/image061.gif" v:shapes="Picture_x0020_12"><![endif]></span></p> 1620 1618 1621 1619 <p class=MsoNormal>Clearly that did not index all the observed peaks, so we … … 1630 1628 1631 1629 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1632 id="Picture_x0020_13" o:spid="_x0000_i104 6" type="#_x0000_t75" style='width:5in;1630 id="Picture_x0020_13" o:spid="_x0000_i1043" type="#_x0000_t75" style='width:5in; 1633 1631 height:369.75pt;visibility:visible;mso-wrap-style:square'> 1634 1632 <v:imagedata src="Magnetic-III_files/image019.png" o:title=""/> 1635 1633 </v:shape><![endif]--><![if !vml]><img border=0 width=480 height=493 1636 src="Magnetic-III_files/image06 3.gif" v:shapes="Picture_x0020_13"><![endif]></span></p>1634 src="Magnetic-III_files/image062.gif" v:shapes="Picture_x0020_13"><![endif]></span></p> 1637 1635 1638 1636 <p class=MsoNormal>In this case every powder peak is indexed so a doubling of … … 1661 1659 1662 1660 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1663 id="Picture_x0020_32" o:spid="_x0000_i104 5" type="#_x0000_t75" style='width:182.25pt;1664 height:2 99.25pt;visibility:visible;mso-wrap-style:square'>1665 <v:imagedata src="Magnetic-III_files/image0 28.png" o:title=""/>1666 </v:shape><![endif]--><![if !vml]><img border=0 width=2 43 height=3991667 src="Magnetic-III_files/image06 4.gif" v:shapes="Picture_x0020_32"><![endif]></span></p>1661 id="Picture_x0020_32" o:spid="_x0000_i1042" type="#_x0000_t75" style='width:207.75pt; 1662 height:225.75pt;visibility:visible;mso-wrap-style:square'> 1663 <v:imagedata src="Magnetic-III_files/image030.png" o:title=""/> 1664 </v:shape><![endif]--><![if !vml]><img border=0 width=277 height=301 1665 src="Magnetic-III_files/image063.gif" v:shapes="Picture_x0020_32"><![endif]></span></p> 1668 1666 1669 1667 <p class=MsoNormal>These are the controls for running the Bilbao routine. The … … 1702 1700 1703 1701 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1704 id=" Picture_x0020_15" o:spid="_x0000_i1044" type="#_x0000_t75" style='width:357.75pt;1705 height:123.75pt;visibility:visible;mso-wrap-style:square'>1702 id="_x0000_i1041" type="#_x0000_t75" style='width:357.75pt;height:123.75pt; 1703 visibility:visible;mso-wrap-style:square'> 1706 1704 <v:imagedata src="Magnetic-III_files/image023.png" o:title=""/> 1707 1705 </v:shape><![endif]--><![if !vml]><img border=0 width=477 height=165 1708 src="Magnetic-III_files/image06 5.gif" v:shapes="Picture_x0020_15"><![endif]></span></p>1706 src="Magnetic-III_files/image064.gif" v:shapes="_x0000_i1041"><![endif]></span></p> 1709 1707 1710 1708 <p class=MsoNormal>Press <b style='mso-bidi-font-weight:normal'><span … … 1737 1735 1738 1736 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1739 id="Picture_x0020_33" o:spid="_x0000_i104 3" type="#_x0000_t75" style='width:360.75pt;1737 id="Picture_x0020_33" o:spid="_x0000_i1040" type="#_x0000_t75" style='width:360.75pt; 1740 1738 height:293.25pt;visibility:visible;mso-wrap-style:square'> 1741 1739 <v:imagedata src="Magnetic-III_files/image066.png" o:title=""/> 1742 1740 </v:shape><![endif]--><![if !vml]><img border=0 width=481 height=391 1743 src="Magnetic-III_files/image06 7.gif" v:shapes="Picture_x0020_33"><![endif]></span></p>1741 src="Magnetic-III_files/image065.gif" v:shapes="Picture_x0020_33"><![endif]></span></p> 1744 1742 1745 1743 <p class=MsoNormal>Notice that the number of unique magnetic atoms is either 3 … … 1753 1751 1754 1752 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1755 id="Picture_x0020_1 7" o:spid="_x0000_i1042" type="#_x0000_t75" style='width:304.5pt;1753 id="Picture_x0020_14" o:spid="_x0000_i1039" type="#_x0000_t75" style='width:304.5pt; 1756 1754 height:330pt;visibility:visible;mso-wrap-style:square'> 1757 1755 <v:imagedata src="Magnetic-III_files/image027.png" o:title=""/> 1758 1756 </v:shape><![endif]--><![if !vml]><img border=0 width=406 height=440 1759 src="Magnetic-III_files/image06 8.gif" v:shapes="Picture_x0020_17"><![endif]></span></p>1757 src="Magnetic-III_files/image067.gif" v:shapes="Picture_x0020_14"><![endif]></span></p> 1760 1758 1761 1759 <p class=MsoNormal>These are the magnetic symmetry operations for P<sub>c</sub> … … 1781 1779 1782 1780 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1783 id="Picture_x0020_1 8" o:spid="_x0000_i1041" type="#_x0000_t75" style='width:359.25pt;1781 id="Picture_x0020_15" o:spid="_x0000_i1038" type="#_x0000_t75" style='width:359.25pt; 1784 1782 height:184.5pt;visibility:visible;mso-wrap-style:square'> 1785 1783 <v:imagedata src="Magnetic-III_files/image029.png" o:title=""/> 1786 1784 </v:shape><![endif]--><![if !vml]><img border=0 width=479 height=246 1787 src="Magnetic-III_files/image06 9.gif" v:shapes="Picture_x0020_18"><![endif]></span></p>1785 src="Magnetic-III_files/image068.gif" v:shapes="Picture_x0020_15"><![endif]></span></p> 1788 1786 1789 1787 <p class=MsoNormal>Do <b style='mso-bidi-font-weight:normal'><span 1790 1788 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1791 1789 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Compute/Select 1792 magnetic phase</span></b>; that will make a small popup dialog</p>1790 magnetic/subgroup phase</span></b>; that will make a small popup dialog</p> 1793 1791 1794 1792 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1795 id="Picture_x0020_1 9" o:spid="_x0000_i1040" type="#_x0000_t75" style='width:222.75pt;1793 id="Picture_x0020_16" o:spid="_x0000_i1037" type="#_x0000_t75" style='width:222.75pt; 1796 1794 height:222.75pt;visibility:visible;mso-wrap-style:square'> 1797 1795 <v:imagedata src="Magnetic-III_files/image031.png" o:title=""/> 1798 1796 </v:shape><![endif]--><![if !vml]><img border=0 width=297 height=297 1799 src="Magnetic-III_files/image0 70.gif" v:shapes="Picture_x0020_19"><![endif]></span></p>1797 src="Magnetic-III_files/image069.gif" v:shapes="Picture_x0020_16"><![endif]></span></p> 1800 1798 1801 1799 <p class=MsoNormal>This shows all magnetic phases that were marked Keep in the … … 1808 1806 1809 1807 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1810 id=" _x0000_i1039" type="#_x0000_t75" style='width:283.5pt;height:123.75pt;1811 visibility:visible;mso-wrap-style:square'>1808 id="Picture_x0020_17" o:spid="_x0000_i1036" type="#_x0000_t75" style='width:283.5pt; 1809 height:123.75pt;visibility:visible;mso-wrap-style:square'> 1812 1810 <v:imagedata src="Magnetic-III_files/image033.png" o:title=""/> 1813 1811 </v:shape><![endif]--><![if !vml]><img border=0 width=378 height=165 1814 src="Magnetic-III_files/image07 1.gif" v:shapes="_x0000_i1039"><![endif]></span></p>1812 src="Magnetic-III_files/image070.gif" v:shapes="Picture_x0020_17"><![endif]></span></p> 1815 1813 1816 1814 <p class=MsoNormal>Since the chemical phase had three Co atoms, having three … … 1843 1841 1844 1842 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1845 id=" _x0000_i1038" type="#_x0000_t75" style='width:468.75pt;height:247.5pt;1846 visibility:visible;mso-wrap-style:square'>1843 id="Picture_x0020_18" o:spid="_x0000_i1035" type="#_x0000_t75" style='width:468.75pt; 1844 height:247.5pt;visibility:visible;mso-wrap-style:square'> 1847 1845 <v:imagedata src="Magnetic-III_files/image037.png" o:title=""/> 1848 1846 </v:shape><![endif]--><![if !vml]><img border=0 width=625 height=330 1849 src="Magnetic-III_files/image07 2.gif" v:shapes="_x0000_i1038"><![endif]></span></p>1847 src="Magnetic-III_files/image071.gif" v:shapes="Picture_x0020_18"><![endif]></span></p> 1850 1848 1851 1849 <p class=MsoNormal>Select Atoms, enter <b style='mso-bidi-font-weight:normal'><span … … 1862 1860 1863 1861 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1864 id=" _x0000_i1037" type="#_x0000_t75" style='width:340.5pt;height:9in;1865 visibility:visible;mso-wrap-style:square'>1862 id="Picture_x0020_19" o:spid="_x0000_i1034" type="#_x0000_t75" style='width:340.5pt; 1863 height:9in;visibility:visible;mso-wrap-style:square'> 1866 1864 <v:imagedata src="Magnetic-III_files/image039.png" o:title=""/> 1867 1865 </v:shape><![endif]--><![if !vml]><img border=0 width=454 height=864 1868 src="Magnetic-III_files/image07 3.gif" v:shapes="_x0000_i1037"><![endif]></span></p>1866 src="Magnetic-III_files/image072.gif" v:shapes="Picture_x0020_19"><![endif]></span></p> 1869 1867 1870 1868 <p class=MsoNormal>Do <b style='mso-bidi-font-weight:normal'><span 1871 1869 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1872 1870 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine 1873 </span></b>for the initial refinement. An error popup will show</p> 1874 1875 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1876 id="Picture_x0020_20" o:spid="_x0000_i1036" type="#_x0000_t75" style='width:363.75pt; 1877 height:123pt;visibility:visible;mso-wrap-style:square'> 1878 <v:imagedata src="Magnetic-III_files/image041.png" o:title=""/> 1879 </v:shape><![endif]--><![if !vml]><img border=0 width=485 height=164 1880 src="Magnetic-III_files/image074.gif" v:shapes="Picture_x0020_20"><![endif]></span></p> 1881 1882 <p class=MsoNormal>This is similar to what happened in the previous tutorial 1883 (and is a bug). Press <b style='mso-bidi-font-weight:normal'><span 1884 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1885 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>OK</span></b> 1886 & go to the Constraints entry; well see this same message again. Press <b 1871 </span></b>for the initial refinement. The <span class=SpellE>wR</span> ~18% 1872 with some intensity for all the peaks in the pattern, but the magnetic moments 1873 are probably wrong. Go to the magnetic phase Atoms tab and select refine <b 1887 1874 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 1888 1875 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 1889 minor-latin'>OK</span></b> and the constraints will show</p> 1890 1891 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1892 id="Picture_x0020_21" o:spid="_x0000_i1035" type="#_x0000_t75" style='width:361.5pt; 1893 height:269.25pt;visibility:visible;mso-wrap-style:square'> 1894 <v:imagedata src="Magnetic-III_files/image043.png" o:title=""/> 1895 </v:shape><![endif]--><![if !vml]><img border=0 width=482 height=359 1896 src="Magnetic-III_files/image075.gif" v:shapes="Picture_x0020_21"><![endif]></span></p> 1897 1898 <p class=MsoNormal>The actual conflict is the 2<sup>nd</sup> from last one <b 1899 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 1900 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 1901 minor-latin'>EQUIV 1::A0 = 1.000*0::A0</span></b> which is a duplicate of the 1902 one above it. <b style='mso-bidi-font-weight:normal'><span style='font-family: 1903 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 1904 minor-latin;mso-bidi-theme-font:minor-latin'>Delete</span></b> it; the error is 1905 cleared</p> 1906 1907 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape 1908 id="Picture_x0020_22" o:spid="_x0000_i1034" type="#_x0000_t75" style='width:359.25pt; 1909 height:267pt;visibility:visible;mso-wrap-style:square'> 1910 <v:imagedata src="Magnetic-III_files/image045.png" o:title=""/> 1911 </v:shape><![endif]--><![if !vml]><img border=0 width=479 height=356 1912 src="Magnetic-III_files/image076.gif" v:shapes="Picture_x0020_22"><![endif]></span></p> 1913 1914 <p class=MsoNormal>Now try <b style='mso-bidi-font-weight:normal'><span 1915 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1916 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> 1917 again. The <span class=SpellE>wR</span> ~18% with some intensity for all the 1918 peaks in the pattern, but the magnetic moments are probably wrong. Go to the 1919 magnetic phase Atoms tab and select refine <b style='mso-bidi-font-weight:normal'><span 1920 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1921 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>M</span></b> 1922 for all three Co atoms. Do <b style='mso-bidi-font-weight:normal'><span 1923 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1924 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> 1876 minor-latin'>M</span></b> for all three Co atoms. Do <b style='mso-bidi-font-weight: 1877 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font: 1878 minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> 1925 1879 again; the residual drops a bit but now the errors seem to be mostly peak 1926 1880 position. Go to the General tab for both phases and check the <b … … 1937 1891 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font: 1938 1892 minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> 1939 again; <span class=SpellE>wR</span> ~ 1 5% now. To finish the refinement,1893 again; <span class=SpellE>wR</span> ~ 13.6% now. To finish the refinement, 1940 1894 include Instrument parameters <b style='mso-bidi-font-weight:normal'><span 1941 1895 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; … … 1953 1907 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 1954 1908 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> 1955 my residual was <span class=SpellE>wR</span>=7. 49% and the magnetic atoms1909 my residual was <span class=SpellE>wR</span>=7.67% and the magnetic atoms 1956 1910 showed most of the moment on Co2_1 (<span class=SpellE>Mz</span> = 3.2) with 1957 1911 the other two much smaller. </p> … … 1962 1916 <v:imagedata src="Magnetic-III_files/image047.png" o:title=""/> 1963 1917 </v:shape><![endif]--><![if !vml]><img border=0 width=475 height=799 1964 src="Magnetic-III_files/image07 7.gif" v:shapes="Picture_x0020_23"><![endif]></span></p>1918 src="Magnetic-III_files/image073.gif" v:shapes="Picture_x0020_23"><![endif]></span></p> 1965 1919 1966 1920 <p class=MsoNormal>The fit to the powder pattern looks quite good</p> … … 1971 1925 <v:imagedata src="Magnetic-III_files/image049.png" o:title=""/> 1972 1926 </v:shape><![endif]--><![if !vml]><img border=0 width=480 height=377 1973 src="Magnetic-III_files/image07 8.gif" v:shapes="Picture_x0020_24"><![endif]></span></p>1927 src="Magnetic-III_files/image074.gif" v:shapes="Picture_x0020_24"><![endif]></span></p> 1974 1928 1975 1929 <p class=MsoNormal>But we should try the other solution to see if it is better. … … 1999 1953 <v:imagedata src="Magnetic-III_files/image051.png" o:title=""/> 2000 1954 </v:shape><![endif]--><![if !vml]><img border=0 width=479 height=247 2001 src="Magnetic-III_files/image07 9.gif" v:shapes="Picture_x0020_25"><![endif]></span></p>1955 src="Magnetic-III_files/image075.gif" v:shapes="Picture_x0020_25"><![endif]></span></p> 2002 1956 2003 1957 <p class=MsoNormal>Do <b style='mso-bidi-font-weight:normal'><span … … 2011 1965 <v:imagedata src="Magnetic-III_files/image031.png" o:title=""/> 2012 1966 </v:shape><![endif]--><![if !vml]><img border=0 width=297 height=297 2013 src="Magnetic-III_files/image0 70.gif" v:shapes="Picture_x0020_26"><![endif]></span></p>1967 src="Magnetic-III_files/image069.gif" v:shapes="Picture_x0020_26"><![endif]></span></p> 2014 1968 2015 1969 <p class=MsoNormal>We already tried the 1<sup>st</sup> one; now select the 2<sup>nd</sup> … … 2021 1975 <v:imagedata src="Magnetic-III_files/image053.png" o:title=""/> 2022 1976 </v:shape><![endif]--><![if !vml]><img border=0 width=378 height=165 2023 src="Magnetic-III_files/image0 80.gif" v:shapes="Picture_x0020_27"><![endif]></span></p>1977 src="Magnetic-III_files/image076.gif" v:shapes="Picture_x0020_27"><![endif]></span></p> 2024 1978 2025 1979 <p class=MsoNormal>It looks very similar to what we had before; close … … 2030 1984 new project <b style='mso-bidi-font-weight:normal'><span style='font-family: 2031 1985 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 2032 minor-latin;mso-bidi-theme-font:minor-latin'>Ba6Co6 mag_2.gpx</span></b> will be2033 created. The General tab for this new phase will be shown</p>1986 minor-latin;mso-bidi-theme-font:minor-latin'>Ba6Co6 mag_2.gpx</span></b> will 1987 be created. The General tab for this new phase will be shown</p> 2034 1988 2035 1989 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape … … 2038 1992 <v:imagedata src="Magnetic-III_files/image055.png" o:title=""/> 2039 1993 </v:shape><![endif]--><![if !vml]><img border=0 width=484 height=249 2040 src="Magnetic-III_files/image0 81.gif" v:shapes="Picture_x0020_28"><![endif]></span></p>1994 src="Magnetic-III_files/image077.gif" v:shapes="Picture_x0020_28"><![endif]></span></p> 2041 1995 2042 1996 <p class=MsoNormal>Select the Atoms tab & set <span class=SpellE>Mz</span> … … 2044 1998 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2045 1999 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>1.0</span></b>. 2046 Then do the refinement steps we outlined for the 1<sup>st</sup> magnetic structure.2047 Do <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 2048 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:2049 minor-latin '>Calculate/Refine</span></b> first youll again have to correct2050 he constraints by deleting the duplicate one. Then set the <b style='mso-bidi-font-weight:2051 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:2052 minor-latin;mso- hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>M</span></b>2053 refine flags for themagnetic atoms; do <b style='mso-bidi-font-weight:normal'><span2000 Then do the refinement steps we outlined for the 1<sup>st</sup> magnetic 2001 structure. Do <b style='mso-bidi-font-weight:normal'><span style='font-family: 2002 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 2003 minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> first. 2004 Then set the <b style='mso-bidi-font-weight:normal'><span style='font-family: 2005 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 2006 minor-latin;mso-bidi-theme-font:minor-latin'>M</span></b> refine flags for the 2007 magnetic atoms; do <b style='mso-bidi-font-weight:normal'><span 2054 2008 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2055 2009 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b>. … … 2070 2024 Finally use <b style='mso-bidi-font-weight:normal'><span style='font-family: 2071 2025 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 2072 minor-latin;mso-bidi-theme-font:minor-latin'>6</span></b> background 2073 coefficients and refine <b style='mso-bidi-font-weight:normal'><span 2074 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2075 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>XU</span></b> 2076 for the chemical phase atoms and <b style='mso-bidi-font-weight:normal'><span 2077 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2078 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>XUM</span></b> 2079 for the magnetic atoms. Do <b style='mso-bidi-font-weight:normal'><span 2080 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2081 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b> 2082 a few times until it converges. I got <span class=SpellE>wR</span> = 7.46% 2083 which is only slightly better than the result for the first model. In this case 2084 the tetrahedral Co atom carries the large magnetic moment while the octahedral 2085 ones have nearly zero moment. This is probably the better model because it is 2086 similar to the magnetic structures found for related materials. We can see if 2087 the moment is fully on the tetrahedral Co; set <span class=SpellE><b 2026 minor-latin;mso-bidi-theme-font:minor-latin'>6</span></b> background coefficients 2027 and refine <b style='mso-bidi-font-weight:normal'><span style='font-family: 2028 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 2029 minor-latin;mso-bidi-theme-font:minor-latin'>XU</span></b> for the chemical 2030 phase atoms and <b style='mso-bidi-font-weight:normal'><span style='font-family: 2031 "Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-hansi-theme-font: 2032 minor-latin;mso-bidi-theme-font:minor-latin'>XUM</span></b> for the magnetic 2033 atoms. Do <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 2034 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 2035 minor-latin'>Calculate/Refine</span></b> a few times until it converges. I got <span 2036 class=SpellE>wR</span> = 7.47% which is only slightly better than the result 2037 for the first model. In this case the tetrahedral Co atom carries the large 2038 magnetic moment while the octahedral ones have nearly zero moment. This is 2039 probably the better model because it is similar to the magnetic structures 2040 found for related materials. We can see if the moment is fully on the 2041 tetrahedral Co; set <span class=SpellE><b style='mso-bidi-font-weight:normal'><span 2042 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2043 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Mz</span></b></span><b 2088 2044 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 2089 2045 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 2090 minor-latin'>Mz</span></b></span><b style='mso-bidi-font-weight:normal'><span 2091 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2092 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>=0</span></b> 2093 for the other two and set their refinement flags to just <b style='mso-bidi-font-weight: 2094 normal'><span style='font-family:"Calibri",sans-serif;mso-ascii-theme-font: 2095 minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>XU</span></b>. 2096 Do <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 2097 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 2098 minor-latin'>Calculate/Refine</span></b>. My final <span class=SpellE>wR</span>=7.462% 2099 shows that probably all the magnetic moment is on the tetrahedral Co atoms. The 2100 Atoms list </p> 2046 minor-latin'>=0</span></b> for the other two and set their refinement flags to 2047 just <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 2048 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 2049 minor-latin'>XU</span></b>. Do <b style='mso-bidi-font-weight:normal'><span 2050 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2051 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Calculate/Refine</span></b>. 2052 My final <span class=SpellE>wR</span>=7.476% shows that probably all the 2053 magnetic moment is on the tetrahedral Co atoms. The Atoms list </p> 2101 2054 2102 2055 <p class=MsoNormal><span style='mso-no-proof:yes'><!--[if gte vml 1]><v:shape … … 2105 2058 <v:imagedata src="Magnetic-III_files/image084.png" o:title=""/> 2106 2059 </v:shape><![endif]--><![if !vml]><img border=0 width=482 height=110 2107 src="Magnetic-III_files/image0 82.gif" v:shapes="Picture_x0020_29"><![endif]></span></p>2108 2109 <p class=MsoNormal><span class=GramE>gives</span> <span class=SpellE>Mz</span>=3. 296(35);2060 src="Magnetic-III_files/image078.gif" v:shapes="Picture_x0020_29"><![endif]></span></p> 2061 2062 <p class=MsoNormal><span class=GramE>gives</span> <span class=SpellE>Mz</span>=3.347(43); 2110 2063 the <span class=SpellE>esd</span> is from <b style='mso-bidi-font-weight:normal'><span 2111 2064 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; … … 2118 2071 <v:imagedata src="Magnetic-III_files/image086.png" o:title=""/> 2119 2072 </v:shape><![endif]--><![if !vml]><img border=0 width=237 height=480 2120 src="Magnetic-III_files/image0 83.gif" v:shapes="Picture_x0020_30"><![endif]><!--[if gte vml 1]><v:shape2073 src="Magnetic-III_files/image079.gif" v:shapes="Picture_x0020_30"><![endif]><!--[if gte vml 1]><v:shape 2121 2074 id="Picture_x0020_31" o:spid="_x0000_i1025" type="#_x0000_t75" style='width:187.5pt; 2122 2075 height:358.5pt;visibility:visible;mso-wrap-style:square'> 2123 2076 <v:imagedata src="Magnetic-III_files/image088.png" o:title=""/> 2124 2077 </v:shape><![endif]--><![if !vml]><img border=0 width=250 height=478 2125 src="Magnetic-III_files/image08 5.gif" v:shapes="Picture_x0020_31"><![endif]></span></p>2078 src="Magnetic-III_files/image080.gif" v:shapes="Picture_x0020_31"><![endif]></span></p> 2126 2079 2127 2080 <p class=MsoNormal>Ive placed the doubled c-axis chemical structure so you can 2128 2081 see the relationship between them.</p> 2129 2082 2130 <p class=MsoNormal>If I impose a similar constraint for the 1<sup>st</sup> model, 2131 the final <span class=SpellE>wR</span>=7.524% is slightly higher than for the 2<sup>nd</sup> 2132 model. This concludes this tutorial; you probably want to <span class=GramE><b 2133 style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri",sans-serif; 2134 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-theme-font: 2135 minor-latin'>Save</span></b></span> both projects before closing GSAS-II.</p> 2083 <p class=MsoNormal>If I impose a similar constraint for the 1<sup>st</sup> 2084 model, the final <span class=SpellE>wR</span>=7.524% is slightly higher than 2085 for the 2<sup>nd</sup> model. This concludes this tutorial; you probably want 2086 to <span class=GramE><b style='mso-bidi-font-weight:normal'><span 2087 style='font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin; 2088 mso-hansi-theme-font:minor-latin;mso-bidi-theme-font:minor-latin'>Save</span></b></span> 2089 both projects before closing GSAS-II.</p> 2136 2090 2137 2091 </div> -
Tutorials/Magnetic-III/Magnetic-III_files/filelist.xml
r3642 r3700 12 12 <o:File HRef="image025.gif"/> 13 13 <o:File HRef="image007.png"/> 14 <o:File HRef="image028.gif"/> 15 <o:File HRef="image009.png"/> 14 16 <o:File HRef="image057.gif"/> 15 <o:File HRef="image0 09.png"/>17 <o:File HRef="image011.png"/> 16 18 <o:File HRef="image058.gif"/> 17 <o:File HRef="image01 1.png"/>19 <o:File HRef="image013.png"/> 18 20 <o:File HRef="image059.gif"/> 19 <o:File HRef="image01 3.png"/>21 <o:File HRef="image015.png"/> 20 22 <o:File HRef="image060.gif"/> 21 <o:File HRef="image01 5.png"/>23 <o:File HRef="image017.png"/> 22 24 <o:File HRef="image061.gif"/> 23 <o:File HRef="image01 7.png"/>25 <o:File HRef="image019.png"/> 24 26 <o:File HRef="image062.gif"/> 25 <o:File HRef="image0 19.png"/>27 <o:File HRef="image030.png"/> 26 28 <o:File HRef="image063.gif"/> 27 <o:File HRef="image02 8.png"/>29 <o:File HRef="image023.png"/> 28 30 <o:File HRef="image064.gif"/> 29 <o:File HRef="image0 23.png"/>31 <o:File HRef="image066.png"/> 30 32 <o:File HRef="image065.gif"/> 31 <o:File HRef="image0 66.png"/>33 <o:File HRef="image027.png"/> 32 34 <o:File HRef="image067.gif"/> 33 <o:File HRef="image02 7.png"/>35 <o:File HRef="image029.png"/> 34 36 <o:File HRef="image068.gif"/> 35 <o:File HRef="image0 29.png"/>37 <o:File HRef="image031.png"/> 36 38 <o:File HRef="image069.gif"/> 37 <o:File HRef="image03 1.png"/>39 <o:File HRef="image033.png"/> 38 40 <o:File HRef="image070.gif"/> 39 <o:File HRef="image03 3.png"/>41 <o:File HRef="image037.png"/> 40 42 <o:File HRef="image071.gif"/> 41 <o:File HRef="image03 7.png"/>43 <o:File HRef="image039.png"/> 42 44 <o:File HRef="image072.gif"/> 43 <o:File HRef="image0 39.png"/>45 <o:File HRef="image047.png"/> 44 46 <o:File HRef="image073.gif"/> 45 <o:File HRef="image04 1.png"/>47 <o:File HRef="image049.png"/> 46 48 <o:File HRef="image074.gif"/> 47 <o:File HRef="image0 43.png"/>49 <o:File HRef="image051.png"/> 48 50 <o:File HRef="image075.gif"/> 49 <o:File HRef="image0 45.png"/>51 <o:File HRef="image053.png"/> 50 52 <o:File HRef="image076.gif"/> 51 <o:File HRef="image0 47.png"/>53 <o:File HRef="image055.png"/> 52 54 <o:File HRef="image077.gif"/> 53 <o:File HRef="image0 49.png"/>55 <o:File HRef="image084.png"/> 54 56 <o:File HRef="image078.gif"/> 55 <o:File HRef="image0 51.png"/>57 <o:File HRef="image086.png"/> 56 58 <o:File HRef="image079.gif"/> 57 <o:File HRef="image0 53.png"/>59 <o:File HRef="image088.png"/> 58 60 <o:File HRef="image080.gif"/> 59 <o:File HRef="image055.png"/>60 <o:File HRef="image081.gif"/>61 <o:File HRef="image084.png"/>62 <o:File HRef="image082.gif"/>63 <o:File HRef="image086.png"/>64 <o:File HRef="image083.gif"/>65 <o:File HRef="image088.png"/>66 <o:File HRef="image085.gif"/>67 61 <o:File HRef="filelist.xml"/> 68 62 </xml>
Note: See TracChangeset
for help on using the changeset viewer.