Transport properties of discontinuous Co80Fe20/Al2O3 multilayers, prepared by ion beam sputtering

• Tipo: Artigo em Revista Científica Internacional
• Data: 1999

Autores

G.N. Kakazei (Autor) Outra; Freitas, PP (Autor) Outra; Cardoso, S (Autor) Outra; Lopes, AML (Autor) Outra; de Azevedo, MMP (Autor) Outra; pogorelov, y. g. (Autor) FCUP; sousa, j. b. (Autor) FCUP

Revista

Título: IEEE Transactions on Magnetics

Vol. 35

Páginas: 2895-2897

ISSN: 0018-9464

Editora: IEEE

Indexação

ISI Web of Knowledge - 29 Citações

Scopus - 34 Citações

Outras Informações

ID Authenticus: P-001-3EG

DOI: 10.1109/20.801017

Abstract (EN): Ion Beam sputtered Co80Fe20(t)/Al2O3(30 Angstrom) multilayers were obtained. The Co80Fe20 layers become discontinuous for nominal thickness t less than or equal to 18 Angstrom. Tunnel magnetoresistance was measured in CIP and CPP geometries, reaching up to 6.5% at room temperature and 11% at 15 K, for as-deposited films in CIP geometry. The temperature dependence of MR was found quite different for the two geometries: fairly strong in the CIP case and almost absent in the CPP geometry. A model is proposed to explain these large differences in behavior.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3