Temperature compensated magnetic materials of the type SmxR1−xCo5(R=Tb,Dy,Er)
作者:
R. J. J. Martis,
N. Gupta,
S. G. Sankar,
V. U. S. Rao,
期刊:
Journal of Applied Physics
(AIP Available online 1978)
卷期:
Volume 49,
issue 3
页码: 2070-2071
ISSN:0021-8979
年代: 1978
DOI:10.1063/1.324742
出版商: AIP
数据来源: AIP
摘要:
Permanent magnets made from SmCo5exhibit negative reversible change in magnetization with increasing temperature, typically of the order of 0.04&percent; per deg. C. between −100 and +200 C. It is desirable to improve this property by suitable substitutions. In the present study, a systematic examination of the preparation, structural and magnetic characterization of SmxR1−xCo5(R=Tb, Dy and Er) has been undertaken. The ternaries were prepared by induction melting of the metals of proper stoichiometries. Magnetic studies were performed between 4.2 and 1000 K in applied fields up to 20 kOe. The results indicate that the best temperature compensation is achieved in the ternary SmxDy1−xCo5. Saturation magnetization and Curie temperatures are also reported.
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