1. Universidade Federal do Rio Grande do Norte
2. Centro de Ciências Exatas e da Terra
3. DFTE - Departamento de Física Teórica e Experimental
4. CCET - DFTE - Artigos publicados em periódicos

Título:	Effects of composition on the stability of the magnetic order of ferrimagnetic multilayers
Autor(es):	Dantas, Ana L. Vieira, Selma R. Carriço, Artur da Silva
Palavras-chave:	Induced instability;Ferrimagnetic multilayers
Data do documento:	2002
Editor:	APS PHYSICS
Referência:	DANTAS, Ana L. ; VIEIRA, Selma R.; CARRIÇO, Artur da Silva. Effects of composition on the stability of the magnetic order of ferrimagnetic multilayers. Physical Review B - Condensed Matter and Materials Physics, Estados Unnidos, v. 65, n.17, p. 17241, 2002. Disponível em: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.65.172414 Acesso em: 24 mar. 2020.
Resumo:	We study the field induced instability of the antiferromagnetic phase of magnetic multilayers consisting of a stacking of uniaxial ferromagnetic films, F1 and F2, with thicknesses t1 and t2, coupled through a nonmagnetic ~NM! spacer. The external field is along the uniaxial axis, in the plane of the films, and the composition is varied by choosing arbitrary values of the relative thickness b5t1 /t2. We calculate the critical value of the external field H*, and examine the nature of the phase transition. We find that H* does not change with the multilayer thickness in the case of multilayers with an even number of magnetic layers, (@F1 /NM/F2 /NM#n , n arbitrary!. The nature of the phase transition and the critical field depend on the value of b, and the minimum value of H* corresponds to b51. For a multilayer with an odd number of magnetic layers we find that the thickness dependence of the critical field is significantly affected by the value of b.
URI:	https://repositorio.ufrn.br/jspui/handle/123456789/28656
Aparece nas coleções:	CCET - DFTE - Artigos publicados em periódicos

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