Effect of film morphology on the magnetic properties for NdFeB thin films

T. Sato, H. Kato, T. Shima*, Y. K. Takahashi, K. Hono

*この研究の対応する著者

研究成果: Article査読

17 被引用数 (Scopus)

抄録

The microstructure and magnetic properties of NdFeB thin films with a particulate structure were investigated. The nominal thickness of the NdFeB layer (tN) was varied from 2 to 50 nm on a (0 0 1) Mo buffer layer. The films were grown with their c-axis perpendicular to the plane, and the morphology of the film with tN=2 nm was shown to be particulate from an atomic force microscope image. The slope of the initial magnetization curve became steeper by increasing the tN value in the initial magnetization curve, indicating that the film morphology composed of single domain particles changed to that of multi-domain particles with growth. The film with tN=8 nm, which had a structure consisting of a mixture of single and multiple domain particles, showed the maximum value of the coercivity measured in the direction perpendicular to the film plane (Hc) as 19.5 kOe.

本文言語English
ページ(範囲)162-165
ページ数4
ジャーナルJournal of Magnetism and Magnetic Materials
323
1
DOI
出版ステータスPublished - 2011 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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