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

Research output: Contribution to journalConference article

28 Scopus citations

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 languageEnglish (US)
Pages (from-to)2534-2536
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Keywords

  • Anisotropy
  • Coercivity
  • Finite-temperature magnetism
  • Permanent magnets

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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