| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Microwave Magnetic Properties and Natural Resonance of ε-Co Nanoparticles |
YANG Yong, XU Cai-Ling, QIAO Liang, Li Xing-Hua, LI Fa-Shen
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| Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000 |
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| Cite this article: |
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YANG Yong, XU Cai-Ling, QIAO Liang et al 2010 Chin. Phys. Lett. 27 057501 |
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Abstract Owing to the novel crystal structure, ε-Co nanoparticles with an average diameter of 12 nm are synthesized and the microwave magnetic properties of the epoxy resin composite with 50 vol% εCo particles are measured in the frequency range 0.1-7 GHz. The experimental resonance frequency (4.7 GHz) matches well with the values obtained by the theoretical calculation with the Kittel equation and fitting the experimental permeability dispersion curve via the Landau-Lifshitz equation. Hence the resonance peak is attributed to natural resonance mode. This work is believed to be beneficial for further understanding microwave applications of the novel ε-Co nanoparticles.
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| Keywords:
75.50.Cc
76.90.+d
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Received: 02 December 2009
Published: 23 April 2010
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| PACS: |
75.50.Cc
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(Other ferromagnetic metals and alloys)
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76.90.+d
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(Other topics in magnetic resonances and relaxations?)
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