Non-180° domains in LiTaO3 thin films deposited by metal organic chemical vapor deposition
Epitaxial lithium tantalate (LiTaO3) thin films were grown on the hexagonal plane of sapphire substrates by metal organic chemical vapor deposition. Two crystallographic variants, related to each other by 180° rotation around the c axis, as well as non-180° domains were determined by transmission electron microscopy from cross-sectional samples of these films. A structural model for the non-180° domain is proposed and the possible formation mechanisms are discussed.
Record created on 2009-08-13, modified on 2016-08-08