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Magnetostriction of dilute rare-earth bismuthides: The effect of non-S-state ions versus “S-state” ions

1983; Elsevier BV; Volume: 38; Issue: 1 Linguagem: Inglês

10.1016/0304-8853(83)90100-2

ISSN

1873-4766

Autores

H. Hafner, D. Davidov, G. J. Nieuwenhuys,

Tópico(s)

Magnetic Properties of Alloys

Resumo

Abstract Shape magnetostriction measurements along the [001] direction were carried out for dilute rare-earth bismuthides; LaBi: R (R = Ce, Sm, Gd, Tb, Er) and the antimonide LaSb: Gd. The magnetostriction of LaBi: Ce and LaBi: Sm reveal the “reverse magnetostriction” phenomenon, enabling us to extract an overall crystalline field splitting of 12 K for the former compound. The magnetostriction of LaBi: Gd and LaSb: Gd which are significantly larger than that of the “pure” hosts, can be explained by a modified version of a model previously suggested by us. The fitting procedure yields magnetoelastic coupling constants for LaSb: Gd and LaBi: Gd which has the correct sign and magnitude according to existing theories.

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