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Journal article

Ultra-high ferromagnetic resonance frequency in exchange-biased system

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Temasek Laboratories, National University of Singapore, 5A Engineering Drive 2, Singapore 117411, Singapore1

Center for Superconducting and Magnetic Materials, Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore2

Static and dynamic magnetic properties of exchange-biased FeCo/MnIr multilayers were systematically investigated. A huge increased ferromagnetic resonance frequency up to 10GHz was observed in the case of thin MnIr layers being possibly interpreted as the contribution of the rotatable anisotropy. The rotatable anisotropy as well as the resonance frequency and frequency linewidth can be tuned by changing the thickness of MnIr layer.

The correlation between the variation of rotatable anisotropy and enhancement of coercivity and magnetic damping is discussed.

Language: English
Year: 2010
Pages: 504-507
ISSN: 18734669 and 09258388
Types: Journal article
DOI: 10.1016/j.jallcom.2010.07.064

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