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The Binary Oxide System TeO 2 MoO 3
Author(s) -
Bart J. C. J.,
Petrini G.,
Giordano N.
Publication year - 1975
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19754120310
Subject(s) - devitrification , liquidus , stoichiometry , oxide , materials science , phase (matter) , quenching (fluorescence) , binary system , atmospheric temperature range , solid solution , analytical chemistry (journal) , diffraction , binary number , crystallography , mineralogy , chemistry , crystallization , thermodynamics , metallurgy , optics , organic chemistry , fluorescence , physics , arithmetic , mathematics
Phase analysis of the mixed oxide system TeO 2 MoO 3 by means of x‐ray diffraction and optical microscopy indicates the formation of a new phase, α‐Te 2 MoO 7 , stable at room temperature. Below 500°C mixtures of crystalline products are obtained or complete devitrification can easily be induced in the system TeO 2 MoO 3 . Above this temperature, tendency to glass formation is observed under the conditions employed, due to the liquidus temperature effect. Quenching of a melt of Te 2 MoO 7 yields a dark yellow glass, α‐Te 2 MoO 7 . X‐ray and density measurements were used to explore the range of stoichiometry and exclude formation of solid solutions in the system; no apparent relationship exists between the crystal structures of the component oxides and the binary compound.