Exchange coupling and magnetoresistance in CoFe/NiCu/CoFe spin valves near the Curie point of the spacer

  title={Exchange coupling and magnetoresistance in CoFe/NiCu/CoFe spin valves near the Curie point of the spacer},
  author={S. Andersson and Vladislav Korenivski},
  journal={Journal of Applied Physics},
Thermal control of exchange coupling between two strongly ferromagnetic layers through a weakly ferromagnetic Ni–Cu spacer and the associated magnetoresistance is investigated. The spacer, having a Curie point slightly above room temperature, can be cycled between its paramagnetic and ferromagnetic states by varying the temperature externally or using joule heating. It is shown that the giant magnetoresistance vanishes due to a strong reduction in the mean free path in the spacer at above ∼30… Expand
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