Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
75 (1994), S. 6537-6539
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Giant magnetoresistance (GMR) of 8% at 4.2 K is found in sandwich films having the composition Ni0.7Co0.3(50 A(ring))/Cu(t)/NiCo(50 A(ring))/NiCoO(40 A(ring)) where NiCoO is a mixed oxide overlayer that exchange couples with the NiCo alloy layer. These films show a MR temperature dependence quite similar to that previously reported for Co/Cu/Co/CoO where the MR becomes small above 200 K. When bilayers of CoO/NiO are placed on the NiCo layer, the temperature dependence of MR extends to 250 K. The magnitude of the MR at 4.2 K scales with the magnitude of the saturation magnetization in the NiCo and Co films.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.356940
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