MAGNETIC-ORDERING AND PARAMAGNETIC RELAXATION OF YB-3+ IN YBNI2SI2

被引:16
作者
BONVILLE, P [1 ]
HODGES, JA [1 ]
IMBERT, P [1 ]
JEHANNO, G [1 ]
JACCARD, D [1 ]
SIERRO, J [1 ]
机构
[1] UNIV GENEVA,DEPT PHYS MATIERE CONDENSEE,CH-1211 GENEVA,SWITZERLAND
关键词
D O I
10.1016/0304-8853(91)90178-D
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The magnetically ordered phase and the Yb3+ paramagnetic relaxation in the compound YbNi2Si2 have been investigated by Yb-170 Mossbauer spectroscopy between 0.05 and 80 K. The magnetic ordering transition is found to occur at T(N) = 2.1 K, the Yb3+ magnetic moments being perpendicular to the fourfold symmetry axis (c-axis). Above T(N) and upto 30 K, the thermal variation of the Yb3+ paramagnetic relaxation rate is a superposition of an interionic exchange term (spin-spin relaxation) and of a T-linear conduction electron-4f spin exchange term (Korringa relaxation).
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页码:178 / 186
页数:9
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