Induced-Moment Ferromagnetic Ordering in the Singlet-Ground State Compound TmNi sub 2

Measurements of the magnetization in very high fields, the low temperature specific heat and the AC susceptibility, both in zero and non zero magnetic field, of the intermetallic cubic Laves phase compound TmNi sub 2 are presented. This material appears to be a singlet--singlet system with an inter-...

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Published inSolid state communications Vol. 60; no. 12; pp. 917 - 921
Main Authors Deutz, A F, Brom, H B, Deelen, H
Format Journal Article
LanguageEnglish
Published 01.12.1986
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Summary:Measurements of the magnetization in very high fields, the low temperature specific heat and the AC susceptibility, both in zero and non zero magnetic field, of the intermetallic cubic Laves phase compound TmNi sub 2 are presented. This material appears to be a singlet--singlet system with an inter-ionic exchange which just exceeds the critical value for magnetic ordering. The absence of a clear anomaly in the specific heat near the ferromagnetic transition temperature T sub c = 1.1K is discussed in a molecular field approximation including crystal field effects. The results of crystal field parameters corresponding to a Hamiltonian for a system with a distortion from cubic symmetry. 21 ref.--AA
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ISSN:0038-1098