The effect of a substitutional Fe impurity on the magnetic properties of the antiferromagnetic FeRh alloy

Khwaja, Y.; Nauciel‐Bloch, M.

doi:10.1016/0038-1098(77)90025-4

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1977

2021

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Cited by 11 publications

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Off‐stoichiometry effects in the antiferromagnetic ferh alloy

Khwaja¹,

Nauciel‐Bloch²

1977

Physica Status Solidi (b)

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A model is developed for the band structure of the Feo.bRho.5 mtiferromagnetic ordered alloy, and the local effects are studied of a substitutional impurity on the electronic and magnetic properties of the host. It is found that anFe impurity substituted for Rh creates a perturbation extending a t least to the nearest neighbours of the impurity, and a total ferromagnetic moment close to 3.5,~~. A Rh impurity substituted for Fe has a localized and less important effect. The influence of the magnetic state of the host and the case of other impurities substituted for Rh are also investigated.On construit nn modkle de bandes pour l'alliage ordonne antiferromagnetique Feo,sRho,S, et on Btudie les effets locaux d'une impuret6 substitutionnelle sur les propriBt6s Blectroniques et magri6tiques de la matrice. On trouve qu'une impuret6 defer substitube au rhodium cr6e une perturbation qui s'ktend au moins jusqu'aux premiers voisins de I'impuretB et un moment total voisin de 3,5pu. Une impuretk de Rh substitube au fer produit un effet localis6 et moins important. On examine Bgalement I'influence de 1'Btat magnhtique de la matrice et le cas dautres types d'impureths substitukes au rhodium.

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