High coercivity in rapidly quenched Sm(Fe, T)12-type magnets
- 8 May 1989
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 54 (19) , 1934-1936
- https://doi.org/10.1063/1.101501
Abstract
The magnetic and structural properties of melt‐spun Sm(FeT)12 alloys where T=Ti,V,Al,Cu,Ga,Si and with some containing small amounts of B and C have been studied. The samples are magnetically soft in the as‐quenched state. High coercive fields are developed upon heating the samples at temperatures ranging from 750 to 1050 °C. The tetragonal ThMn12‐type structure was found in all the alloys after annealing. The highest coercivities have been obtained on a Sm10Fe80Ti7.5B2.5 sample with Hc ≂7.7 kOe. These coercivities are much higher than those obtained previously and make these alloys good candidates for permanent magnet development.Keywords
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