Magnetization reversal and spin dynamics exchange in biased F/AF bilayers probed with complex permeability spectra

Details Magnetization reversal and spin dynamics exchange in biased F/AF bilayers probed with complex permeability spectra Magnetization reversal and spin dynamics exchange in biased F/AF bilayers probed with complex permeability spectra

2003-11-14

arxiv.org/abs/cond-mat/0311338v1

J. Appl. Phys. 93, 7711 (2003)

Physics

Condensed Matter

4 pages, 4 figures

Scientific paper

10.1063/1.1557959

The spin dynamics of the ferromagnetic pinned layer of ferro-antiferromagnetic coupled NiFe/MnNi bilayers is investigated in a broad frequency range (30 MHz-6 GHz). A phenomenological model based on the Landau-Lifshitz equation for the complex permeability of the F/AF bilayer is proposed. The experimental results are compared to theoretical predictions. We show that the resonance frequencies, measured during the magnetization, are likewise hysteretic.

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