Journal of the Physical Society of Japan
        Vol.64 No.2, February, 1995 pp.581-587
        DOI : 10.1143/JPSJ.64.581


    Neutron Diffraction Studies on a Non-Coupled Giant Magnetoresistance
    System, Co/Cu/NiFe/Cu Multilayer

Nobuyoshi Hosoito, Teruo Ono, Hidefumi Yamamoto*, Teruya Shinjo and
Yasuo Endoh1

Institute for Chemical Research, Kyoto University, Uji 611
1Department of Physics, Tohoku University, Sendai 980-77

(Received August 1, 1994)

By polarized neutron diffraction, a long range antiparallel alignment of
Co and NiFe(permalloy) layer magnetizations is confirmed in a
non-coupled Co(10 Å)/Cu(36 Å)/NiFe(10 Å)/Cu(36 Å) giant
magnetoresistance system. A general relationship between the
magnetoresistance and the magnetization vectors of the Co and NiFe
layers under various magnetic fields and temperatures is experimentally
derived. The observed large temperature change in the magnetoresistance
ratio is understood with this relationship.

KEYWORDS: neutron diffraction, giant magnetoresistance, non-coupled
giant magnetoresistance system, multilayer, antiparallel alignment of
magnetizations, magnetization process, coercive field


*Present address: Memory Resarch Laboratory, NEC Corporation, 4-1-1
Miyazaki, Miyamae-ku, Kawasaki 216.

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