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Updated: May 16, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
Published on: May 29, 2018
Exchange coupling driven omnidirectional rotatable anisotropy in ferrite doped CoFe thin film
Guozhi Chai1, Nguyen N Phuoc, C K Ong
1Temasek Laboratories, National University of Singapore, Singapore 117411, Singapore.
Abstract:
Isotropic magnetic materials with high resonant frequencies are useful for applications in microwave devices. Undoped CoFe thin films, as common soft magnetic materials with high saturation magnetization, show isotropic characteristics but no high frequency response. Here, we use ferrite doped CoFe thin film to realize a resonant frequency higher than 4.5 GHz at all orientations. The exchange coupling between ferrimagnet and ferromagnet is assumed to play a key role on the omnidirectional rotatable anisotropy.
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