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Belakroum, K., Ouili, Z., Leblanc-Soreau, A., Hemmida, M. & von Nidda, H.-A. K. (2013) Magnetic properties of CuCrZrSe4. J. Magn. Magn. Mater. 334 130–135.
Added by: Laurent Cournède (2016-03-10 21:23:31) |
| Type de référence: Article DOI: 10.1016/j.jmmm.2012.12.006 Numéro d'identification (ISBN etc.): 0304-8853 Clé BibTeX: Belakroum2013 Voir tous les détails bibliographiques  |
Catégories: IMN Mots-clés: crystal-structure, cu(cr1-xzrx)(2)s-4, CuCrZrSe4 compound, DC and AC magnetization measurement, esr, ESR spectroscopy, heavy-fermion, liv2o4, Spin glass behavior, spinel compounds, Spinel structure, transition Créateurs: Belakroum, Hemmida, Leblanc-Soreau, von Nidda, Ouili Collection: J. Magn. Magn. Mater. |
Consultations : 1/580
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We report on structural and magnetic properties of the spinel compound CuCrZrSe4. Rietveld refinement of the powder x-ray diffraction patterns reveals the normal spinel structure AB(2)Se(4), where the Zr4+ and Cr3+ ions occupy the B sites, while the Cu1+ ions are located on A sites. The magnetic susceptibility reveals a Curie-Weiss law above 250 K with a ferromagnetic Curie-Weiss temperature theta(p) = 115 K and an effective paramagnetic moment mu(eff) =3.75 mu(B) per Cr3+ ion corresponding to a g value g=1.94 in fair agreement with electron spin resonance (ESR) measurements. Below 100 K the magnetization deviates from the Curie-Weiss behaviour and splits into field-cooled (FC) and zero field-cooled (ZFC) branches. A second anomaly in the magnetization close to 10 K, which is also visible in the ESR parameters, indicates the transition into a spin-glass state due to the random distribution of Zr and Cr ions on the B site. This is supported by the frequency dependence of the anomaly detected by AC susceptibility measurements. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.
Added by: Laurent Cournède |