THE COEXISTENCE OF SUPERCONDUCTIVITY AND FERROMAGNETISM IN (CE1-XGDX)RU2 - SELF-INDUCED VORTEX STATE

被引:10
作者
KITAOKA, Y [1 ]
CHANG, NS [1 ]
EBISU, T [1 ]
MATSUMURA, M [1 ]
ASAYAMA, K [1 ]
KUMAGAI, K [1 ]
机构
[1] HOKKAIDO UNIV,FAC SCI,DEPT PHYS,SAPPORO,HOKKAIDO 060,JAPAN
关键词
MAGNETISM; -; Ferromagnetism; SUPERCONDUCTIVITY;
D O I
10.1143/JPSJ.54.1543
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Electric resistivity, ac magnetic susceptibility, magnetization and **1**5**7Gd NMR measurements have been performed in the title compound for x equals 0. 12 and 0. 13. The resistivity measurement determines the superconducting transition temperature for x equals 0. 12 and 0. 13 to be 4. 85 K and 4. 4 K, respectively, though both the susceptibility and magnetization show no diamagnetism. An internal field associated with the ferromagnetic order appears in **1**5**7Gd NMR, where the nuclear spin-lattice relaxation time for x equals 0. 12 below 100 mK shows a characteristic temperature dependence for the superconductivity. From these results, it is concluded that the compound with x equals 0. 12 is microscopically in a coexistent state of the superconductivity and the ferromagnetism at low temperature, forming a self-induced vortex state.
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页码:1543 / 1551
页数:9
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