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In-plane Isotropic Microwave Performance of CoZr Trilayer in GHz Range
Lulu Pan1, Fenglong Wang1, Wenfeng Wang1
1Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University, Lanzhou, 730000, People's Republic of China.
Abstract:
In this paper, we investigate the high frequency performance of Co90Zr10/SiO2/Co90Zr10 trilayers. It is demonstrated that the in-plane isotropic microwave performance is theoretically derived from the solution of the Landau-Lifshitz-Gilbert equation and experimentally achieved in that sandwich structured film. The valuable isotropic behavior comes from the superposition of two uncouple ferromagnetic layers in which the uniaxial magnetic anisotropic fields are equivalent but mutually orthogonal. Moreover, the isotropic microwave performance can be tuned to higher resonance frequency up to 5.3 GHz by employing the oblique deposition technique. It offers a convenient and effective way to achieve an unusual in-plane isotropic microwave performance with high permeability in GHz, holding promising applications for the magnetic devices in the high frequency information technology.
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