Abstract
In this paper, the results of systematic studies of complex molybdate systems M2MoO4–Ln2(MoO4)3–Hf(MoO4)2 (M = Li–Cs, Tl; Ln = La–Lu) are presented. Subsolidus phase diagrams of ternary systems were constructed and new triple molybdates were obtained. The optimum synthesis conditions for poly- and monocrystalline form were determined. According to single-crystal data, the structure of one of the representatives of triple molybdates was determined.
Highlights
The molybdates containing tetrahedrally coordinated anions MoO42– are among the most exciting objects in inorganic and crystal chemistry
We present results on the study of phase equilibria in ternary molybdate systems containing single, three- and tetravalent elements, as well as data on the crystal structure of complex molybdate structural types
The aforementioned systems can be divided into two groups
Summary
The molybdates containing tetrahedrally coordinated anions MoO42– are among the most exciting objects in inorganic and crystal chemistry. Special attention has been paid to the molybdates that include luminescent elements, such as Ce, Pr, Eu, Tb, Tm, in their composition. These compounds can be used as phosphors for white light emitting diodes. Numerous studies had been undertaken that aim to search for new effective phosphors for the creation of WLED. These phosphors should possess high stability, compactness, high luminescence efficiency when excited by near UV, long lifetime and low cost. Luminescent materials containing rare-earth elements are within the scope of such studies [1,2,3]. Primary fitting of the diffraction patterns was made using PROFAN software from the CSD package
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