Journal of the Magnetics Society of Japan
Online ISSN : 1882-2932
Print ISSN : 1882-2924
ISSN-L : 1882-2924

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First-Order Reversal Curve Analysis of Superparamagnetic Nanoparticles with Oriented Easy Axis of Magnetization
E. SasaokaC. YangS. B. TrisnantoZ. SongS. OtaY. Takemura
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JOURNAL OPEN ACCESS Advance online publication

Article ID: 2307R006

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Abstract

  We analyzed the magnetization process of magnetic nanoparticles using first-order reversal curve (FORC) analysis and verified a superparamagnetic feature and the orientation of the easy axis of the particles. The FORCs and FORC diagram of magnetic nanoparticles dispersed in water exhibited a superparamagnetic feature. The differences in the magnetizations and distributions of the coercive force of the solid-state samples were used to identify the orientation of the easy axes of magnetization.

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