Title :
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
fDate :
11/1/1995 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
