Microwave Magnetic Permeability of Fe<SUB>3</SUB>O<SUB>4 </SUB>Nanoparticles

doi:10.1088/0256-307X/26/1/017501

Chin. Phys. Lett.

2009, Vol. 26

Issue (1): 017501 DOI: 10.1088/0256-307X/26/1/017501

CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES

Microwave Magnetic Permeability of Fe₃O₄Nanoparticles

ZHENG Hong, YANG Yong, WEN Fu-Sheng, YI Hai-Bo,ZHOU Dong, LI Fa-Shen

Institute of Applied Magnetics, Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000

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ZHENG Hong, YANG Yong, WEN Fu-Sheng et al 2009 Chin. Phys. Lett. 26 017501

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Abstract Well-dispersed Fe₃O₄nanoparticles are synthesized via an oxidization method with NaNO₂ as oxidant. The microwave magnetic properties of the composites are studied with different volume fractions of Fe₃O₄ nanoparticles. It is found that a lower volume fraction corresponds to a higher magnetic resonance frequency. This could be ascribed to the enhancement of exchange interaction with a weakened dipolar interaction when the volume fraction decreases.

Keywords: 75.50.Gg 75.40.Gb 75.75.+a

Received: 14 May 2008 Published: 24 December 2008

PACS:	75.50.Gg	(Ferrimagnetics)
	75.40.Gb	(Dynamic properties?)
	75.75.+a

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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/1/017501 OR https://cpl.iphy.ac.cn/Y2009/V26/I1/017501

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	ZHENG Hong
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	LI Fa-Shen

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