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New Copper (II) — Rare Earth (III) Compounds1 II. Crystal Chemistry of CuLn2Ge2O8, CuLn2Si4O12 and CuLn2Ge4O12

Published online by Cambridge University Press:  10 January 2013

U. Lambert
Affiliation:
Mineralogisch-Petrographisches Institut, Universitat Heidelberg, FRG
W. Eysel
Affiliation:
Mineralogisch-Petrographisches Institut, Universitat Heidelberg, FRG

Abstract

Twenty seven new rare earth (Ln) compounds CuLn2 Ge2O8, CuLn2Ge4O12 and CuLn2Si4O12 have been synthesized. The powder diagrams were indexed and solid solutions of silicates and germanates were investigated. Structural variations with temperature, lanthanide contraction and Ge/Si substitution are described. Indications for second order phase transitions were found.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1986

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References

Breuer, K.-H. and Eysel, W.: The calorimetric calibration of Differential Scanning Calorimetry Cells. Thermochimica Acta 57, 317329 (1982).Google Scholar
Große, H.-P. and Tillmanns, E.: Bariummetasilicate, BaSiO3(h). Cryst. Struct. Comm. 3, 603605 (1974).Google Scholar
Gunawardane, R. P., Cradwick, M. E. and Glasser, L.S.D.: Crystal structure of Na2BaSi2O6. J. Cham. Soc. Daltan, Transactions, 23972400 (1973).CrossRefGoogle Scholar
Hilmer, W.: Die Struktur der Hochtemperaturform des Bariumgermanates BaGeO3(h). Acta Cryst. 15, 11011105 (1962).CrossRefGoogle Scholar
Lambert, U.: Kristallchemische Untersuchungen in den Systemen CuOR2O3 bzw. RE2O3-SiO2 und CuO-R2O3 bzw. RE2O3-GeO2. Diplom Thesis, Universitat Heidelberg, 1982.Google Scholar
Lambert, U. and Eysel, W.: New silicates and germanates in systems CuO-R2O3-TO2. Fortschr. Miner. 61, Beiheft 1, 125 (1983).Google Scholar
Lambert, U. and Eysel, W.: New Copper(II) — Rare Earth(III) Compounds. I. Temary systems CuO-M2O3-TO2. Powder Diffraction 1, 1986 1–2, 45.Google Scholar