Contribution a l'etude du polymorphisme de Ga2S3: Structure cristalline de Mn0,23Ga1,85S3 |
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Authors: | Nguyen-Huy Dung Pardo Marie-Paule DogguySmiri Leïla |
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Affiliation: | Laboratoire de Physique (Laboratoire de Chimie Minérale Structurale associé au C.N.R.S. no 2000) — Faculté des Sciences Pharmaceutiques et Biologiques de Paris V — 4, avenue de l''Observatoire 75270 Paris Cedex 06, France |
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Abstract: | The Mn0.23Ga1.85S3 phase belongs to the solid solution , stable at low temperature in the Ga2S3MnS system. It is hexagonal superstructure of the wurtzite, with the Ga2S3α′ type (; Z = 6; space groupe P61 or P65). Its crystal structure has been refined by the least squares method to a final R = 0.06 with 323 independant reflections. This structure is closely related to Ga2S3 α described by Hahn and Frank, and differs only by the partial occupation of the vacant metal site of Ga2S3 by Mn atoms in statistical disorder. |
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