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HomeMaterials Science ForumMaterials Science Forum Vol. 899The Exchange Energy Term and the Curling Reversal...

The Exchange Energy Term and the Curling Reversal Mode in Hard Magnetic Materials Manufactured by Powder Metallurgy

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Abstract:

The curling reversal mode is discussed, with emphasis on the assumptions of the model, many of them unrealistic. The curling mode assumes the Bloch approximation, where a cosine function is approximated by a polynomial of second order. It is argued that if the curling model takes place, this could affect the anisotropy field, and then the anisotropy field would be function of the grain size, but this is not observed. Exchange effects may affect hysteresis curve, as discussed in the SW-CLC model.

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Periodical:

Materials Science Forum (Volume 899)

Pages:

549-553

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.899.549

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Online since:

July 2017

Authors:

Amilton Ferreira da Silva Jr.*, Adriano S. Martins, Marcos Flavio de Campos

Keywords:

Coercivity, Curling, Exchange Energy, Hysteresis, Magnets

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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