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Re: [sdpd] Point group symmetry
- To: sdpd...@yahoogroups.com
- Subject: Re: [sdpd] Point group symmetry
- From: Vincent Favre-Nicolin <vincefn...@users.sourceforge.net>
- Date: Thu, 23 Oct 2008 22:56:11 +0200
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<p> Hi,<br>
<br>
> I have a very basic question. If suppose the positions of<br>
> the atoms in the unit cell is given like<br>
> Mn 16d (5/8,5/8,5/8)<wbr>; Li 8a(0,0,0); O 32e(x,x,x), Is the point group<br>
> symmetry for each atom is different or the same for all (-3m1). The<br>
> space group for the system is R-3m. Please help me on how to find the<br>
> point group for each unique positions of the atom in the unit cell.<br>
<br>
That is written in the international tables for crystallography.<br>
<br>
Alternatively, the Bilbao crystallographic server lists Wyckoff positions <br>
and their symmetry. <br>
=>Go to :<a href="http://www.cryst.ehu.es/cryst/get_wp.html";>http://www.cryst.<wbr>ehu.es/cryst/<wbr>get_wp.html</a><br>
And enter "166" for R-3m, you'll get all special positions and the site <br>
symmetry as well.<br>
<br>
-- <br>
Vincent Favre-Nicolin<br>
<br>
CEA Grenoble/INAC/<wbr>SP2M <a href="http://inac.cea.fr";>http://inac.<wbr>cea.fr</a><br>
Univ. Joseph Fourier (Grenoble) <a href="http://www.ujf-grenoble.fr";>http://www.ujf-<wbr>grenoble.<wbr>fr</a><br>
<br>
ObjCryst & Fox <a href="http://objcryst.sf.net/Fox";>http://objcryst.<wbr>sf.net/Fox</a><br>
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