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 |
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Pages (from-to) | 2534-2536 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 37 |
Issue number | 4 I |
DOIs | |
Publication status | Published - Jul 2001 |
Externally published | Yes |
Event | 8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States Duration: Jan 7 2001 → Jan 11 2001 |
Keywords
- Anisotropy
- Coercivity
- Finite-temperature magnetism
- Permanent magnets
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering