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Accurate evaluation of magnetic coupling between atoms with numerous open-shells : an ab-initio method

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 نشر من قبل Marie-Bernadette Lepetit
 تاريخ النشر 2009
  مجال البحث فيزياء
والبحث باللغة English
 تأليف Alain Gelle




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We propose a new ab initio method designed for the accurate calculation of effective exchange integrals between atoms with numerous open-shells. This method applies to ferromagnetic as well as antiferromagnetic exchange, direct or ligand-mediated exchange. Test calculations on high spin transition metal oxides such as KNiF3, Ba2CoS3 or YMnO3 exhibit a very good accuracy compared either to the best ab initio calculations --when those are feasible-- and with experimental evaluations.



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