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Crystal chemistry of the system Bi2O3–CdO–GeO2a)b)

Published online by Cambridge University Press:  10 January 2013

S. Wies  and
W. Eysel
S. Wies
Affiliation:
Mineralogisch-Petrographisches Institut der Universität, D-69120 Heidelberg, Germany
W. Eysel
Affiliation:
Mineralogisch-Petrographisches Institut der Universität, D-69120 Heidelberg, Germany
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Abstract

The ternary phase diagram of the system Bi2O3-CdO-GeO2 was investigated in several isothermal sections using predominantly X-ray powder diffraction. The following phases are described with respect to their crystal chemistry, phase relations and powder patterns: Bi2−2xCd2x(O3−x⍽9+x) (solid solution with anti-α-AgI structure), CdGeO3 (complicated polymorphism), Bi12GeO20 (stoichiometric sillenite), Cd-sillenite (solid solution), Bi1.8Cd0.2GeO4.9 (metastable, new phase, new structure type with GeO5 polyhedra), Bi2CdGeO6 (new ternary oxide, new structure type).

Type
Research Article
Information
Powder Diffraction , Volume 11 , Issue 2 , June 1996 , pp. 80 - 84
Copyright
Copyright © Cambridge University Press 1996

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References

a) This paper forms the major part of a Ph.D. thesis (Wies, 1993). Parts were presented at the IUCr Congress in Bordeaux (Wies and Eysel, 1990).

b) Dedicated to Prof. Dr. Heinz Schulz, München, on his 60th birthday.