High-temperature magnetic properties of mechanically alloyed SmCo5 and YCo5 magnets

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

Research output: Contribution to journalConference articlepeer-review

36 Scopus citations


The high-temperature coercivity of mechanically alloyed and subsequently annealed RCo5 (R = Sm and Y) is studied. The annealed materials have the hexagonal CaCu5 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 YCo5 is much smaller than that of SmCo5. 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
Issue number4 I
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


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

ASJC Scopus subject areas

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


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