[Pw_forum] Orthorhombic structure of Gallium

[Payam Norouzzadeh]

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
>>
>>
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>>
>
>
> --
>
> Mike Mehl
> Naval Research Laboratory
> Washington DC USA
>
>
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