random alloy

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mathdu
Posts: 4
Joined: Sat Jul 23, 2011 5:53 pm

random alloy

Post by mathdu » Wed Jul 27, 2011 9:57 am

Hi,
Is it possible to deal with random alloy in abinit? If possible, please give me an example of fcc/bcc binary alloy (any materials) input file for 50-50 concentrations.
thanks in advanced.
Moshiour

Boris
Posts: 128
Joined: Tue Feb 16, 2010 10:13 am
Location: France

Re: random alloy

Post by Boris » Wed Jul 27, 2011 4:56 pm

Hi

To model a random alloy, you just need to build a special quasirandom structure with 50/50 concentrations and run it with abinit.
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Boris Dorado
Atomic Energy Commission
France
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mathdu
Posts: 4
Joined: Sat Jul 23, 2011 5:53 pm

Re: random alloy

Post by mathdu » Wed Jul 27, 2011 7:28 pm

Dear Boris,
Thanks a lot. I would like to see an example for exact format of input file using SQS.
Thanks in advanced,
Moshiour

Boris
Posts: 128
Joined: Tue Feb 16, 2010 10:13 am
Location: France

Re: random alloy

Post by Boris » Wed Jul 27, 2011 8:37 pm

Generating the SQS is independent of abinit.

You need to use another software for that. It will provide you with the atomic positions, cell parameters and primitive vectors. Then you just use a regular input file from abinit using these atomic positions, cell parameters and primitive vectors.

Using abinit for SQS is no different than any other structure. Generating the SQS is the most difficult part.
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Boris Dorado
Atomic Energy Commission
France
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