Liu, WJ (reprint author), NANJING UNIV,NATL LAB SOLID STATE MICROSTRUCT,NANJING 210093,PEOPLES R CHINA.
KTiOAsO4 crystals grown from tungstate fluxes have been studied by white-beam synchrotron radiation topography. It is shown that growth striations are primary planar defects. By anomalous scattering, ferroelectric domains in KTA are investigated and the ratio of \F(004)\(2) to \F(00 $$(4) over bar)\(2) is calculated. The mechanisms of domain inversion via 2-fold axis or n-glide plane are also discussed in terms of the structural characteristics of KTA. (C) 1996 American Institute of Physics.