CRYSTAL-STRUCTURE OF LPE-GROWN LINB1-XTAXO3 EPITAXIAL-FILMS

LiNb1-xTaxO3 epitaxial films, which were grown on LiNbO3 substrates at various growth temperatures by the liquid-phase epitaxial method, wer e characterized using X-ray rocking curves, diffraction-space maps and absolute lattice constants. The films had relaxed structures regardle ss of the growth temperature, and the density of the dislocations due to the lattice mismatch between the films and the substrates increased with increasing growth temperature. Therefore, the crystallinity of t he films became poor with increasing growth temperature. (C) 1998 Else vier Science B.V. All rights reserved.