Deconvoluting Reversal Modes in Exchange Biased Nanodots
arXiv:1210.1817 · doi:10.1103/PhysRevB.86.144410
Abstract
Ensemble-averaged exchange bias in arrays of Fe/FeF2 nanodots has been deconvoluted into local, microscopic, bias separately experienced by nanodots going through different reversal modes. The relative fraction of dots in each mode can be modified by exchange bias. Single domain dots exhibit a simple loop shift, while vortex state dots have asymmetric shifts in the vortex nucleation and annihilation fields, manifesting local incomplete domain walls in these nanodots as magnetic vortices with tilted cores.
17 pages, 3 figures. Phys. Rev. B in press
References in corpus (6)
- Nanoscale control of exchange bias with BiFeO3 thin films
- Spin transfer in an antiferromagnet
- Magnetic Fingerprints of sub-100 nm Fe Nanodots
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- Angular Dependence of Exchange Anisotropy on Cooling Field in FM/Fluoride Thin Films
Cited by in corpus (4)
- Accessing Different Spin-Disordered States using First Order Reversal Curves
- New Reversal Mode in Exchange Coupled Antiferromagnetic/Ferromagnetic Disks: Distorted Viscous Vortex
- Size-dependent magnetization switching characteristics and spin wave modes of FePt nanostructures
- Ultrasensitive Detection Enabled by Nonlinear Magnetization of Nanomagnetic Labels