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Journal of Structural Chemistry

2012 year, number 1

ANALYSIS OF PAIR HETEROVALENT SUBSTITUTIONS IN SCHEELITE-TYPE MOLYBDATES AND TUNGSTATES

V. D. Zhuravlev, O. G. Reznitskikh
Keywords: scheelite, molybdates, tungstates, heterovalent substitutions
Pages: 105-109

Abstract

An analysis of the formation of solid solutions in MAO4-(Me0.5Ln0.5)AO4 systems, where Me = Li, Na, K; M = Ca, Sr, Ba, Pb, Cd; Ln = La-Gd, Y, Bi; A = Mo, W, is performed in the approximation of regular solutions. Equations that make it possible to determine the temperature of the transition of limited solid solutions to unlimited ones at heterovalent substitutions M2+ ↔are obtained.