Steep MR change in NiFe/Cu/Co trilayers

Author

Tanuma, T. ; Takahashi, S. ; Maeda, A. ; Kume, M. ; Kuroki, AndK

Author_Institution

New Mater. Res. Center, Sanyo Electr. Co. Ltd., Osaka, Japan

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3955

Lastpage

3957

Abstract

A field sensitivity of about 2%/Oe in magnetoresistance (MR) change has been observed in NiFe(6 nm)/Cu/Co(5 nm) trilayers. The MR change was accompanied with a sharp increase in resistivity before decreasing steeply for increasing fields. Thickness of the Ca spacer layer influenced the sensitivity of MR change. These results suggest an existence of interlayer coupling between the two magnetic layers. An analysis of this MR effect suggests that biquadratic coupling plays an important role in the steep MR change

Keywords

cobalt; copper; exchange interactions (electron); ferromagnetic materials; giant magnetoresistance; iron alloys; magnetic multilayers; magnetoresistance; nickel alloys; 5 nm; 6 nm; Cu spacer layer; NiFe-Cu-Co; NiFe/Cu/Co trilayers; biquadratic coupling; field sensitivity; interlayer coupling; magnetic layers; magnetoresistance; resistivity; steep magnetoresistance change; Anisotropic magnetoresistance; Antiferromagnetic materials; Conductivity; Couplings; Magnetic analysis; Magnetic anisotropy; Magnetic films; Magnetic materials; Magnetic moments; Perpendicular magnetic anisotropy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489828

Filename

489828