Thank you Prof.Mehl. In the following paper it is said that the structure is faced center (Fig 1):
Ab initio calculations of structural and electronic properties of gallium solid-state phases, PHYSICAL REVIEW B VOLUME 52, NUMBER 14 1 OCTOBER 1995-II and that's why I've confused. Best regards,Payam Norouzzadeh On Tue, Feb 14, 2012 at 6:21 PM, Michael Mehl <rcjhawk at gmail.com> wrote: > It's base-centered orthorhombic, so that would be #9 > > http://cst-www.nrl.navy.mil/**lattice/struk/a11.html<http://cst-www.nrl.navy.mil/lattice/struk/a11.html> > > Generally "A", "B", or "C" in the space group's International Symbol > denotes a base-centered system, be it monoclinic or orthorhombic. > > > On 02/14/2012 04:04 PM, Payam Norouzzadeh wrote: > >> Hello Q.E users >> >> Gallium has an orthorhombic crystal structure but I don't know what >> number for ibrav is related to it. >> There are several numbers for orthorhombic structures. Could someone give >> me a clue to resolve the problem? >> >> Best regards,Payam Norouzzadeh >> >> >> ______________________________**_________________ >> Pw_forum mailing list >> Pw_forum at pwscf.org >> http://www.democritos.it/**mailman/listinfo/pw_forum<http://www.democritos.it/mailman/listinfo/pw_forum> >> > > > -- > > Mike Mehl > Naval Research Laboratory > Washington DC USA > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.democritos.it/pipermail/pw_forum/attachments/20120214/008ca2f4/attachment.htm
