Combined effects of magnetic interaction and domain wall pinning on the coercivity in a bulk Nd60Fe30Al10 ferromagnet.

Tan, X H; Chan, S F; Han, K; Xu, H

Tan, X H; Chan, S F; Han, K; Xu, H.

Afiliación

Tan XH; Laboratory for microstructures, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, P. R. China.
Chan SF; Laboratory for microstructures, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, P. R. China.
Han K; National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310, USA.
Xu H; Laboratory for microstructures, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, P. R. China.

Sci Rep ; 4: 6805, 2014 Oct 28.

Article en En | MEDLINE | ID: mdl-25348232

RESUMEN

Understanding the coercivity mechanism has a substantial impact on developing novel permanent materials. However, the current coercivity mechanisms used widely in permanent alloys cannot explain well the amorphous phase produced hard magnetic behavior of Nd-based bulk amorphous alloys (BAAs). Here, we propose that the coercivity in as-cast Nd60Fe30Al10 alloy is from the combination of magnetic interaction and strong pinning of domain walls. Moreover, the role of domain wall pinning is less affected after crystallization, while the magnetic interaction is dependent on the annealing temperature. Our findings give further insight into the coercivity mechanism of Nd-based bulk ferromagnets and provide a new idea to design prospective permanent alloys with coercivity from the combination of magnetic interaction and pinning of domain walls.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2014 Tipo del documento: Article Pais de publicación: Reino Unido

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