The specifics of twinning in orthorhombic phases of PbHfO₃single crystals

Abstract

Abstract The results of optical and crystallographical studies of the twin boundaries and twinning configurations in the orthorhombic Pba2 and P2221 phases of lead hafnate single crystals have been reported. Different kinds of zigzag boundaries in crystals with complicated twin patterns have been described, and their origins analyzed. The mechanical stresses accompanying with the coherent elastic matching of twin components have been estimated.