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Crystal growth and defect crystal structure of CdF 2 and nonstoichiometric phases Cd 1 − x R x F 2 + x ( R = rare earth element or in). 5. Crystal structure of as-grown Cd 0.9 R 0.1 F 2.1 ( R = La-Nd) single crystals: Nanoclusters of structural defects

Crystal growth and defect crystal structure of CdF 2 and nonstoichiometric phases Cd 1 − x R x F... Abstract As-grown Cd0.9 R 0.1F2.1 (R = La-Nd) crystals were assigned to the CaF2 structure type and their structure was determined by X-ray diffraction. A new octacubic cluster of structural defects in Cd0.9 R 0.1F2.1 phases is proposed. The changes in the anionic motif of the Cd0.9 R 0.1F2.1 phase can be explained as a result of the formation of tetrahedral [Cd4 − n R n F26] and inverse octacubic [Cd14 − n R n F68] clusters with, respectively, tetrahedral and cuboctahedral anionic groups as cores. It is established that fluctuations of the La concentration in the cross section of a Cd0.9La0.1F2.1 crystal boule do not exceed 2.7%. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Crystallography Reports Springer Journals

Crystal growth and defect crystal structure of CdF 2 and nonstoichiometric phases Cd 1 − x R x F 2 + x ( R = rare earth element or in). 5. Crystal structure of as-grown Cd 0.9 R 0.1 F 2.1 ( R = La-Nd) single crystals: Nanoclusters of structural defects

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References (6)

Publisher
Springer Journals
Copyright
2008 Pleiades Publishing, Ltd.
ISSN
1063-7745
eISSN
1562-689X
DOI
10.1134/S1063774508040068
Publisher site
See Article on Publisher Site

Abstract

Abstract As-grown Cd0.9 R 0.1F2.1 (R = La-Nd) crystals were assigned to the CaF2 structure type and their structure was determined by X-ray diffraction. A new octacubic cluster of structural defects in Cd0.9 R 0.1F2.1 phases is proposed. The changes in the anionic motif of the Cd0.9 R 0.1F2.1 phase can be explained as a result of the formation of tetrahedral [Cd4 − n R n F26] and inverse octacubic [Cd14 − n R n F68] clusters with, respectively, tetrahedral and cuboctahedral anionic groups as cores. It is established that fluctuations of the La concentration in the cross section of a Cd0.9La0.1F2.1 crystal boule do not exceed 2.7%.

Journal

Crystallography ReportsSpringer Journals

Published: Jul 1, 2008

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