Open AccessUNIDIRECTIONAL ANISOTROPY MAGNETORESISTANCE AND EXCHANGE COUPLING IN 81 NiFe/Cr MULTILAYER
Author(s) -
Huiyu Chen,
Luo You-Quan,
Hong Zhu,
Wen Lin-Qing
Publication year - 1994
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.43.1185
Subject(s) - magnetoresistance , condensed matter physics , materials science , anisotropy , scattering , coupling (piping) , exchange bias , hysteresis , magnetic field , magnetic anisotropy , physics , magnetization , optics , quantum mechanics , metallurgy
There are unidirectional anisotropy in 81 NiFe/Cr multilayers prepared by electronic beam evaporated, The samples exhibit asymmetrical hysteresis loop. which eguivalent to the existence of an exchange bias of the order of 1 Oe. Two branches of magnetoresistance loop measured with increasing and decreasing magnetic field respectively are different especially in transvers field condition. The maximum value of transvers magnetoresistance of some samples reaches 0.78% and with maximum anisotropy magnetoresistance of 4.72%.That value is more larger than the value 3%[ of 82 NiFe alloy with high quality. We consider that the ma-gnetoresistance effect of these multilayer not only caused by spin-orbit coupling ma-chanism but also under the influence of spin dependent scattering of conduction electron machanism.