Coercive force of new Cu-substituted samarium cobalt alloys
- 15 October 1976
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 29 (8) , 514-516
- https://doi.org/10.1063/1.89149
Abstract
It was found that sintered alloys having a composition of approximately z=8 in Sm(Co0.85Fe0.05Cu0.10)z exhibit a high coercive force on the order of 10 kOe, for 5–10‐μm average grain size. Magnetization and demagnetization curves showed that the coercive force is controlled by a nucleation process. Attempts were made to achieve a high density without serious grain growth by means of high‐pressure isostatic compaction and hot pressing, resulting in 96% of the density and 7‐μm average grain size. With this approach, Br=10.3kG, IHc=10.2 kOe, and a maximum energy product of 22.0 MG Oe were achieved.Keywords
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