Dear Developers and users,<div><br></div><div>Greetings from Rajagopalan Anna University Chennai</div><div><br></div><div>I have a query. I will be thankful if any one offer me a suggestion or solution.</div><div><br></div>
<div>I am interested in a system Co2FeSi whose space group is 225</div><div>The following positions I used </div><div><br></div><div>Co 0.25 0.25 0.25</div><div>Fe 0.5 0.5 0.5</div><div>Si 0.0 0.0 0.0</div><div>
<br></div><div>Every thing went of well</div><div><br></div><div>I created a super cell with 16 atoms </div><div><br></div><div>I interchanged one position of Si and Fe </div><div><br></div><div>The structure is cubic with space group 221 Pm-3m</div>
<div>This agrees well with the experimental observation</div><div><br></div><div>Now I want to interchange one Co, one Fe and one Si I like to introduce a disorder in the system</div><div><br></div><div>As per the experimental results the resulting structure is A2 the space group is 229</div>
<div><br></div><div>But I am unable to get this structure It is going to space group 12 Cm</div><div><br></div><div>I will be thankful if I get some suggestion from the developers as well as users</div><div><br></div><div>
Regards and greetings</div><div><br></div><div>Rajagopalan<br clear="all"><div><br></div>-- <br><font color="#ff0000"><b> <i> <br>Dr M.Rajagopalan<br>Emeritus Scientist (CSIR)<br>Crystal Growth Center 20 6th Main Road<br>
Anna University Chromepetgreetings</i></b></font></div><div><font color="#ff0000"><b><i><br>Chennai 600 025 Chennai 600 044<br>Phone # 22213023 (R)<br> 22359208 (O)<br>
Mobile 9445125709<br><br></i></b></font><br>
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