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VOLUME 61 | ISSUE 11 | PAGE 911
Surface roughness of layers and giant magnetoresistance of magnetic multilayer structures
A model which explains the giant magnetoresistance of magnetic multilayer structures in terms of a breakup of the magnetic layers into domains is proposed. Since the exchange interaction between layers is an oscillatory function of the thickness of the nonmagnetic layer, fluctuations in thickness give rise to regions with an interaction of the opposite sign. This effect leads to a breakup of the layers into domains. Conditions for this breakup are discussed. This model can explain the entire set of experimental data. © 1995 American Institute of Physics.




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