Observation of inhomogeneity in congruent LiTaO3 crystal

Citation
Xb. Hu et al., Observation of inhomogeneity in congruent LiTaO3 crystal, J CRYST GR, 225(1), 2001, pp. 6-8
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF CRYSTAL GROWTH
ISSN journal
0022-0248 → ACNP
Volume
225
Issue
1
Year of publication
2001
Pages
6 - 8
Database
ISI
SICI code
0022-0248(200105)225:1<6:OOIICL>2.0.ZU;2-9
Abstract
The inhomogeneity in a congruent LiTaO3 crystal has been observed by transm ission synchrotron topography. Many extraordinary regions exist in congruen t LiTaO3 crystal and they often show diffraction intensity different from t hat of ordinary regions in synchrotron topographs. Differential thermal ana lysis indicates that the Curie temperature of the extraordinary region is l ower than that of ordinary region, and the extraordinary region is really a high defect density region. The diffraction contrast of the extraordinary region in synchrotron topographs is explained qualitatively by a calculatio n at the selected wavelength. (C) 2001 Published by Elsevier Science B.V.