1. Magnetic coupling and magnetoresistance in Fe/Si1−xAgx multilayers
- Author
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Tao Zhu, Xi Chen, Hai Wang, Yinjun Wang, H. W. Zhao, W. S. Zhan, Yunjun Tang, and Xiang Li
- Subjects
Condensed Matter::Materials Science ,Materials science ,Physics and Astronomy (miscellaneous) ,Condensed matter physics ,Magnetoresistance ,Percolation ,Superlattice ,Silicon matrix ,Inductive coupling ,Layer (electronics) - Abstract
In this letter, we present a study on the magnetic coupling and magnetoresistance (MR) properties in Fe/Si1−xAgx multilayers (MLs) with a granular Si1−xAgx spacer layer. We found that with increasing silver content (x) in a silicon matrix, the magnetic state of MLs varies from a nonmagnetic-coupling state to a weak-antiferromagnetic state around the percolation point of the ∼24-A-thick granular spacer Si1−xAgx. The MR measurements also reveal an abrupt increase of MR near the same percolation point. These variations are ascribed to the formation of the percolation path in the granular spacer.
- Published
- 2002
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