<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2800.1522" name=GENERATOR></HEAD>
<BODY bgColor=#eaeaea>
<DIV>Sorry, The set of "ibrav=1" can not visualize this structure rightly.
The conventional cell for this spinel structure should contain 56 atoms. The
choice of "ibrav=2" and "ATOMIC_POSITIONS {crystal}" should be rational.</DIV>
<DIV><FONT size=2>
<TABLE width="100%">
<TBODY>
<TR>
<TD width="100%">
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">Sorry,
ibrav=1<BR><BR>
<DIV><SPAN class=gmail_quote>On 11/10/06, <B
class=gmail_sendername>Clark Lee</B> <<A
href="mailto:jibiaoli@gmail.com">jibiaoli@gmail.com</A>>
wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">Since
the number of atomc specified is 14 for spinel structure, I
suppose<SPAN style="FONT-SIZE: larger"></SPAN> the case of ibrav=
2<BR>could probably remove your
trouble.</BLOCKQUOTE></DIV></BLOCKQUOTE></TD></TR></TBODY></TABLE></FONT></DIV></BODY></HTML>