Giant magnetoresistance and low saturation fields in Co-Fe/Cu multilayers

K. Inomata; Y. Saito

doi:10.1016/0304-8853(93)90645-I

Giant magnetoresistance and low saturation fields in Co-Fe/Cu multilayers

K. Inomata, Y. Saito

Center for Innovative Integrated Electronic Systems (CIES)

Toshiba Corporation

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

We have investigated the magnetoresistive properties of Co_xFe_1-x/Cu multilayers with different Co_xFe_1-x and Cu thicknesses, prepared on MgO(110) substrates using ion beam sputtering. The MR ratio for Co₉Fe/Cu multilayers was significantly larger than that for Co/Cu multilayers. The MR ratio oscillates for Cu layer thickness with a 12 Å period for all the multilayers investigated. The Cu intervening magnetic layer coupling depends on the Co concentration and has a broad maximum around x = 0.8. The uniaxial anisotropy induced by epitaxial growth in the multilayers on MgO(110) substrates led to a low saturation field and quite a small field change ΔH needed for giant magnetoresistance. An MR ratio of 16% was attained for ΔH = 50 Oe at room temperature.

Original language	English
Pages (from-to)	425-429
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	126
Issue number	1-3
DOIs	https://doi.org/10.1016/0304-8853(93)90645-I
Publication status	Published - 1993 Sept

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10.1016/0304-8853(93)90645-I

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title = "Giant magnetoresistance and low saturation fields in Co-Fe/Cu multilayers",

abstract = "We have investigated the magnetoresistive properties of CoxFe1-x/Cu multilayers with different CoxFe1-x and Cu thicknesses, prepared on MgO(110) substrates using ion beam sputtering. The MR ratio for Co9Fe/Cu multilayers was significantly larger than that for Co/Cu multilayers. The MR ratio oscillates for Cu layer thickness with a 12 {\AA} period for all the multilayers investigated. The Cu intervening magnetic layer coupling depends on the Co concentration and has a broad maximum around x = 0.8. The uniaxial anisotropy induced by epitaxial growth in the multilayers on MgO(110) substrates led to a low saturation field and quite a small field change ΔH needed for giant magnetoresistance. An MR ratio of 16% was attained for ΔH = 50 Oe at room temperature.",

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AU - Inomata, K.

AU - Saito, Y.

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AB - We have investigated the magnetoresistive properties of CoxFe1-x/Cu multilayers with different CoxFe1-x and Cu thicknesses, prepared on MgO(110) substrates using ion beam sputtering. The MR ratio for Co9Fe/Cu multilayers was significantly larger than that for Co/Cu multilayers. The MR ratio oscillates for Cu layer thickness with a 12 Å period for all the multilayers investigated. The Cu intervening magnetic layer coupling depends on the Co concentration and has a broad maximum around x = 0.8. The uniaxial anisotropy induced by epitaxial growth in the multilayers on MgO(110) substrates led to a low saturation field and quite a small field change ΔH needed for giant magnetoresistance. An MR ratio of 16% was attained for ΔH = 50 Oe at room temperature.

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Giant magnetoresistance and low saturation fields in Co-Fe/Cu multilayers

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