Domain-wall induced coupling between ferromagnetic layers |
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Authors: | Thomas Samant Parkin |
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Affiliation: | IBM Research Division, Almaden Research Center, San Jose, California 95120-6099, USA. |
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Abstract: | The remanent magnetization of a hard ferromagnetic CoPtCr layer is progressively decreased by repeated switching of a neighboring soft magnetic layer. We show that this effect depends strongly on the thickness of the CoPtCr layer and the spacing between the hard and soft layers. We propose a model that accounts for these results: An interlayer magnetostatic coupling is induced by large stray fields from domain walls that form within the soft layer during its magnetization reversal. |
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