Interprétation de la susceptibilité magnétique de l'oxysulfure de samarium par un modèle de champ cristallin期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Interprétation de la susceptibilité magnétique de l'oxysulfure de samarium par un modèle de champ cristallin

Authors:	J Rossat-Mignod R Ballestracci G Quezel C Linares and F Tcheou

Institution:	^a Centre d'Etudes Nucléaires, Cedex 85, 38-Grenoble-Gare, France ^b Centre National de la Recherche Scientifique, Cedex 166, 38-Grenoble-Gare, France

Abstract:	The paramagnetic susceptibility of polycrystalline samarium oxysulfide has been measured between 3° and 300°K. The data are interpreted with an approximation to the crystal potential of the form V_c = _JV₂⁰O₂⁰ + β_JV₄⁰O₄⁰ + β_JV₄³O₄³ and correction taking into account exchange is made. The energy levels and crystal fields parameters have been calculated. Fluorescence studies of Gd₂O₂S: Sm³⁺ and Y₂O₂S: Sm³⁺ have confirmed these results.

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