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<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>Dear Wien2k users, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>It is well known that the delta phase of UZr2 in the U-Zr system is
partially ordered. (both neutron diffraction and x-ray crystallography) <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>In such a case, (space group: P6/mmm) , Zr atom occupies (0,0,0) and U
and Zr are randomly mixed in (2/3, 1/3, ½) and (1/3, /3, 1/2). <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>The completly ordered case of UZr2 can be easily generated and SCF successfully
converged both with and without spin orbit coupling. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>For the generation of struct file in case of partially ordered case, the
struct file gave an error. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>As has been discussed a lot many times in the mailing list, the use of
the supercell program would ease out these issues. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>However, for the beginner like me, I could not get any detailed
information in the UG as well as in the mailing list for such a problem. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>Since the homogeneity range for UZr2 is not much, a 16 atom supercell
would be more than enough to predict the ground state energy. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>However, for calling the supercell program, a valid struct file has to
be present. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>Can anybody throe some light on this issue. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'>Suddhasattwa <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
11.0pt'><o:p> </o:p></span></font></p>
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