High-temperature magnetic properties of mechanically alloyed SmCo 5 and YCo 5 magnets

I. A. Al-Omari; R. Skomski; R. A. Thomas; D. Leslie-Pelecky; D. J. Sellmyer

doi:10.1109/20.951226

High-temperature magnetic properties of mechanically alloyed SmCo ₅ and YCo ₅ magnets

I. A. Al-Omari, R. Skomski, R. A. Thomas, D. Leslie-Pelecky, D. J. Sellmyer

Physics

Research output: Contribution to journal › Article

27 Citations (Scopus)

Abstract

The high-temperature coercivity of mechanically alloyed and subsequently annealed RCo ₅ (R = Sm and Y) is studied. The annealed materials have the hexagonal CaCu ₅ structure with 2:17 (or 1:7) regions as a minor phase, High-temperature magnetic measurements show that the coercivities of materials decrease with increasing temperature from room-temperature to 873 K, but that the temperature coefficient of the coercivity of YCo ₅ is much smaller than that of SmCo ₅. This behavior is explained in terms of the intrinsic temperature variation of the magnetocrystalline anisotropy.

Original language	English
Pages (from-to)	2534-2536
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	37
Issue number	4 I
DOIs	https://doi.org/10.1109/20.951226
Publication status	Published - Jul 2001

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Keywords

Anisotropy
Coercivity
Finite-temperature magnetism
Permanent magnets

ASJC Scopus subject areas

Electrical and Electronic Engineering
Physics and Astronomy (miscellaneous)

Cite this

Al-Omari, I. A., Skomski, R., Thomas, R. A., Leslie-Pelecky, D., & Sellmyer, D. J. (2001). High-temperature magnetic properties of mechanically alloyed SmCo ₅ and YCo ₅ magnets. IEEE Transactions on Magnetics, 37(4 I), 2534-2536. https://doi.org/10.1109/20.951226

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10.1109/20.951226