Temperature compensated magnetic materials of the type SmxR1−xCo5 (R=Tb,Dy,Er)
Temperature compensated magnetic materials of the type SmxR1−xCo5 (R=Tb,Dy,Er)
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DOI：
10.1063/1.324742
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发表时间：
1978-03
影响因子：
3.2
通讯作者：
R. Martis;N. Gupta;S. Sankar;V. Rao
中科院分区：
文献类型：
--
作者：
R. Martis;N. Gupta;S. Sankar;V. Rao
由SmCo 5制成的永磁体随着温度的升高而表现出磁化强度的负可逆变化，通常为每度0.04%的量级。C.在-100到+200摄氏度之间。希望通过合适的取代来改善这种性质。在本研究中，SmxR 1 − xCo 5（R=Tb，Dy和Er）的制备，结构和磁性表征进行了系统的检查。三元化合物是通过适当化学计量的金属的感应熔融制备的。磁性研究进行了4.2和1000 K之间的应用领域高达20 kOe。结果表明，在三元SmxDy 1 − xCo 5中实现了最佳的温度补偿。饱和磁化强度和居里温度也reported.Permanent磁铁制成SmCo 5表现出负可逆变化的磁化强度随着温度的升高，通常的顺序为0.04%每度。C.在-100到+200摄氏度之间。希望通过合适的取代来改善这种性质。在本研究中，SmxR 1 − xCo 5（R=Tb，Dy和Er）的制备，结构和磁性表征进行了系统的检查。三元化合物是通过适当化学计量的金属的感应熔融制备的。磁性研究进行了4.2和1000 K之间的应用领域高达20 kOe。结果表明，在三元SmxDy 1 − xCo 5中实现了最佳的温度补偿。饱和磁化强度和居里温度也有报道。
Permanent magnets made from SmCo5 exhibit negative reversible change in magnetization with increasing temperature, typically of the order of 0.04% 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.Permanent magnets made from SmCo5 exhibit negative reversible change in magnetization with increasing temperature, typically of the order of 0.04% 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.