The magnetic phase diagram of Ni/Ag antiferromagnetic multilayers

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Abstract
The magnetic phase diagram of antiferromagnetically coupled Ni layers in Ni/Ag superlattices is presented from low temperature up to the ordering temperature. Relations between the neutron scattered intensity (linked to the antiferromagnetic order parameter), the magnetization and the absolute magnetoresistance effect are obtained. The transport properties are observed to be driven by the relative orientations and amplitudes of the magnetizations in successive Ni layers both below and above the ordering line H*(T).