Antiferromagnetic versus spin-glass like behavior in MnIn2S4 |
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Authors: | V. Sagredo,M.C. Moró n,L. Betancourt,G.E. Delgado |
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Affiliation: | 1. Laboratorio de Magnetismo, Departamento de Física, Facultad de Ciencias, Universidad de los Andes, Mérida, Venezuela;2. Instituto de Ciencia de Materiales de Aragón, C.S.I.C.—Universidad de Zaragoza, E-50009, Zaragoza, Spain;3. Laboratorio de Cristalografía, Departamento de Química, Facultad de Ciencias, Universidad de los Andes, Mérida, Venezuela |
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Abstract: | The low-temperature magnetic properties of MnIn2S4 have been studied using AC magnetic susceptibility and magnetization experiments. High-temperature susceptibility fits indicate the presence of antiferromagnetic interactions. Low-field magnetization data show a peak at 5.6±0.1 K, below which strong irreversibility is observed between zero-field-cooled (ZFC) and field-cooled (FC) cycles suggesting that the observed peak corresponds to a spin-glass-like transition instead of the antiferromagnetic one previously reported. Further evidence of this magnetic state comes from AC susceptibility data at different frequencies. The in-phase component χ′(T) exhibits the behavior expected of spin glasses, i.e. a shift of the cusp to higher temperatures for higher frequencies. |
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Keywords: | 75.50 Lk 81.10.h 75.59Pp |
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