antiferromagnetic uranium

Queries about input and output files, running specific calculations, etc.


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alij
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antiferromagnetic uranium

#1 Post by alij » Thu Jun 20, 2013 12:50 pm

I am trying to set up calculations to model antiferromagnetic UO2.
I have tried settingg:
MAGMOM = 1*2 2*-2 1*2 8*0
however in the OSZICAR output mag = 0 and I believe it should be in the region of 2.
I have also tried using the NUPDOWN = 2 - which has no effect.


Any help would be much appreciated
Last edited by alij on Thu Jun 20, 2013 12:50 pm, edited 1 time in total.

kambiz
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antiferromagnetic uranium

#2 Post by kambiz » Thu Jun 27, 2013 7:56 am

Hi,

Is this a bulk structure ?? If that s a bulk the total magnetic moment should be zero, because UO2 is AFM and so, the total magnetic moment below the Neel temperature is zero.

If your are modelling a surface, our total initial mag mom is zero. I m not sure about the UO2 but for Co3O4 which is AFM, the total magnetic moment of a surface structure is not zero


Cheers
Last edited by kambiz on Thu Jun 27, 2013 7:56 am, edited 1 time in total.

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