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A synchrotron X-ray diffraction study of a small congruent LiNbO3 crystal: A compatible approach to powder diffraction

Published online by Cambridge University Press:  05 March 2012

Barbara Etschmann and
Nobuo Ishizawa
Barbara Etschmann*
Affiliation:
Materials & Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
Nobuo Ishizawa
Affiliation:
Materials & Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
*
a)Electronic mail: bee@R3401.rlem.titech.ac.jp
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Abstract

Single-crystal synchrotron X-ray diffraction (XRD) data were collected and refined for congruent lithium niobate crystals 8 and 6 μm in diameter, sizes that are comparable to the size of the powder particles used in powder diffraction. The motivation for using such small crystals is to minimize problems such as extinction, which decrease with crystal size. The R/wR factors were 0.011/0.014 and 0.019/0.018, for the 8 and 6 μm data, respectively, and the goodness of fit factors were 2.3(1) and 1.63(8), which compare favorably with values obtained from previous powder and single-crystal diffraction studies. Results from single-crystal XRD using crystals less than 10 μm in size may rival those obtained from powder diffraction.

Keywords

small crystalsynchrotron radiationsingle-crystal XRDlithium niobate

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Type
Technical Articles
Information
Powder Diffraction , Volume 16 , Issue 2 , June 2001, pp. 81 - 85
Copyright
Copyright © Cambridge University Press 2001

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