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Structural investigations and luminescence of In<SUB><FONT SIZE='-1'>2</FONT></SUB>Ge<SUB><FONT SIZE='-1'>2</FONT></SUB>O<SUB><FONT SIZE='-1'>7</FONT></SUB> and In<SUB><FONT SIZE='-1'>2</FONT></SUB>Si<SUB><FONT SIZE='-1'>2</FONT></SUB>O<SUB><FONT SIZE='-1'>7</FONT></SUB>by: T. Gaewdang, J. P. Chaminade, P. Gravereau, A. Garcia, C. Fouassier, M. Pouchard, P. Hagenmuller, B. Jacquier
Zeitschrift für anorganische und allgemeine Chemie, Vol. 620, No. 11. (1994), pp. 1965-1970.
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AbstractThe crystal structures of the ordinary pressure forms of indium digermanate In2Ge2O7 and disilicate In2Si2O7 have been studied from X-ray powder diffraction data by Rietveld refinement. They are closely related to that of the thortveitite which crystallizes in the monoclinic system with the space group C2/m and Z = 2. They show luminescence properties below 160 K and 200 K respectively. The luminescence is discussed in terms of crystal structure and compared to that of some other luminescent indium oxides.
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