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Vibrational studies of the oxysulphide (LaO)4GaS4.5

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Abstract

Far-infrared and Raman spectra of the oxysulphide (LaO)4GaS4.5 single crystal were measured and analysed. The interpretation of the observed spectra is based on the existence of (S-S)2− disulphur groups which are responsible for the high-frequency features. Most of the frequencies are assigned in terms of internal and external vibrations of tetrahedral La4O groups, GaS4 units and (S-S)2− disulphur groups. Spectroscopy measurements are in good agreement with the recent structure determination.

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Authors and Affiliations

  1. Laboratoire de Chimie Minérale, associé au CNRS, UA200, Université René Descartes, 4 avenue de l'Observatoire, 75230, Paris Cedex 06, France

    S. Barnier, M. Palazzi & M. Guittard

  2. Laboratoire de Physique des Solides, associé au CNRS, UA154, Université Pierre et Marie Curie, 4 place Jussieu, 75252, Paris Cedex 05, France

    C. Julien

Authors
  1. S. Barnier
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  2. M. Palazzi
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  3. M. Guittard
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  4. C. Julien
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Barnier, S., Palazzi, M., Guittard, M. et al. Vibrational studies of the oxysulphide (LaO)4GaS4.5 . JOURNAL OF MATERIALS SCIENCE 28, 3761–3763 (1993). https://doi.org/10.1007/BF00353175

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  • DOI: https://doi.org/10.1007/BF00353175

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