<p dir="ltr">Creating a super cell (e.g. 10 unit cells along any unit cell vector, with 6 of them containing Ca and 4 Bi) may take care of mixed site occupancy. However this will break the cell symmetry and space group so atomic coordinates for all the atoms needs to be input.</p>
<div class="gmail_quote">On Dec 30, 2015 7:42 AM, "Andrey Chibisov" <<a href="mailto:andreichibisov@yandex.ru">andreichibisov@yandex.ru</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Colleagues,<br>
In some *.cif files the same positions are occupied by different atoms.<br>
For example, Bi0.8Ca0.2O1.19 has the following coordinates:<br>
                x       y       z    Occ.    U   Site   Sym.<br>
  1 Ca Ca1     0.00000  0.00000  0.00000  0.600  1.000  3a    -3m<br>
  2 Bi Bi1     0.00000  0.00000  0.00000  0.400  1.000  3a    -3m<br>
  3 O  O1     0.00000  0.00000  0.13300  0.100  1.000  6c    3m<br>
  4 O  O2     0.00000  0.00000  0.30000  1.000  1.000  6c    3m<br>
  5 Bi Bi2     0.00000  0.00000  0.22870  1.000  1.000  6c    3m<br>
  6 O  O3     0.00000  0.00000  0.44600  0.680  1.000  6c    3m<br>
<br>
Can I take account of this occupation in *.in file?<br>
<br>
<br>
--<br>
Best regards,<br>
Andrey Chibisov. Ph.D.<br>
Numerical method of mathematical physics Laboratory,<br>
Computational Center, Russian Academy of Sciences.<br>
Khabarovsk, Russia<br>
Web page: <a href="http://ru.linkedin.com/pub/andrey-chibisov/55/253/986/en" rel="noreferrer" target="_blank">http://ru.linkedin.com/pub/andrey-chibisov/55/253/986/en</a><br>
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