Specific Heat of Insulating Spin-Glasses, (Eu,Sr)S, near the Onset of 
Ferromagnetism

Meschede, D.; Steglich, F.; Felsch, W.; Maletta, H.; Zinn, W.

doi:10.1103/PhysRevLett.44.102

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Specific Heat of Insulating Spin-Glasses, (Eu,Sr)S, near the Onset of Ferromagnetism

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Citation

Meschede, D., Steglich, F., Felsch, W., Maletta, H., & Zinn, W. (1980). Specific Heat of Insulating Spin-Glasses, (Eu,Sr)S, near the Onset of Ferromagnetism. Physical Review Letters, 44(2), 102-105. doi:10.1103/PhysRevLett.44.102.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-BFB5-6

Abstract

The specific heat, C(T), of the insulating spin-glass EuxSr1−xS with x=0.40 exhibits a linear term γT and no singularity at Tf, like metallic spin-glasses. A new term, δT−2, is found which may arise from totally decoupled clusters created by frustration. The field dependence, γ(B) and δ(B), show maxima. With x=0.54 the behavior is similar. C(T, B) and χ(T, B) there indicate the spin-glass phase to be supressed at B=1 T.