高保磁力MFM探針によるNd-Fe-B磁石の熱消磁過程その場観察

山岡 武博; 辻川 葉奈; 廣瀬 龍介; 伊藤 亮; 川村 博; 左近 拓男

doi:10.3379/msjmag.1101R005

This article has now been updated. Please use the final version.

In-situ Thermal Demagnetization Observation of Nd-Fe-B Magnets with High Coercivity MFM Probe

T. Yamaoka, H. Tsujikawa, R. Hirose, A. Ito, H. Kawamura, T. Sakon

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Keywords: magnetic force microscopy, magnetic domain, Nd-Fe-B sintered magnet, high coercivity probe, temperature control

JOURNAL OPEN ACCESS Advance online publication

Article ID: 1101R005

DOI https://doi.org/10.3379/msjmag.1101R005

The final version of this article is now available: Vol. 35 (2011) , No. 2 p.60

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Abstract

Magnetic force microscopy (MFM) using an FePt high coercivity probe and Q-control in vacuum enabled an accurate magnetic domain evaluation without changing of probe magnetization in observation of Nd-Fe-B sintered magnets. The effectiveness of this technique to conventional MFM was confirmed with magnetized sample by 50 kOe pulse field and thermally demagnetized sample. And an in-situ thermal demagnetization observation of the Nd-Fe-B sintered magnets succeeded using temperature-controlled MFM.

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