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The Crystal Structure of K2REZr(PO4)3(RE = Y, Gd) Isotypic with Langbeinite

Published online by Cambridge University Press:  10 January 2013

H. Wulff ,
U. Guth  and
B. Loescher
H. Wulff
Affiliation:
Department of Chemistry, University of Greifswald, 0-2200 Greifswald, Germany
U. Guth
Affiliation:
Department of Chemistry, University of Greifswald, 0-2200 Greifswald, Germany
B. Loescher
Affiliation:
Department of Chemistry, University of Greifswald, 0-2200 Greifswald, Germany
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Abstract

K2YZr(PO4)3and K2GdZr(PO4)3were found to have the langbeinite-type structure (K2Mg2(SO4)3). We determined the crystal structure of these compounds from powder diffraction data. They are cubic P213 (no. 198), with a = 10.3346(1)Å and a = 10.3457(3)Å respectively. The intensity values we observed and calculated are reported. Intensity measurements indicate a random distribution of Y3+(Gd3+) and Zr4+on both Mg2+sites of langbeinite.

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Type
Research Article
Information
Powder Diffraction , Volume 7 , Issue 2 , June 1992 , pp. 103 - 106
Copyright
Copyright © Cambridge University Press 1992

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