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Giant Magnetoresistance and Soft Magnetic Properties of NiFeCo/Cu Multilayers

Published online by Cambridge University Press:  03 September 2012

S. Tsunashima ,
M. Jimbo ,
T. Kanda ,
S. Goto  and
S. Uchiyama
S. Tsunashima
Affiliation:
Nagoya University, Nagoya, 464–01, Japan.
M. Jimbo
Affiliation:
Daido Institute of Technology, Nagoya, 457, Japan.
T. Kanda
Affiliation:
Nagoya University, Nagoya, 464–01, Japan.
S. Goto
Affiliation:
Nagoya University, Nagoya, 464–01, Japan.
S. Uchiyama
Affiliation:
Nagoya University, Nagoya, 464–01, Japan.
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Abstract

Giant Magnetoresistance (GMR) and soft magnetic properties together with their structural characteristics were investigated for Ni66Fe16Co18/Cu Multilayers. The Multilayers were prepared by the conventional rf sputtering method on glass or Si substrates using various buffer layers including Fe, NiFeCo, NiFe and CoZr. Although Most of the multilayers exhibited (111) preferred orientation, Fe buffered multilayers showed a considerable (200) X-ray diffraction peak at Cu thicknesses around 1 nm and 2.2 nm which corresponded to the peak positions of GMR. By using fee or amorphous underlayers the (200) diffraction intensity decreased while antiferromagnetic coupling strength was much reduced. Cross-sectional transmission electron micrograph revealed that the (100) oriented multilayer was grown on the (100) oriented Fe underlayer. By controlling the crystal orientation and the layer structure, significantly large magnetoresistance ratio of more than 10 % can be achieved in a field as low as 30 Oe.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 271
Copyright
Copyright © Materials Research Society 1993

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References

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