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

• Type: Article in International Scientific Journal
• Date: 1999

Authors

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

Journal

Title: IEEE Transactions on Magnetics

Vol. 35

Pages: 2895-2897

ISSN: 0018-9464

Publisher: IEEE

Indexing

ISI Web of Knowledge - 29 Citations

Scopus - 34 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3