STUDIES OF HERRINGBONE DOMAIN-STRUCTURES IN LEAD TITANATE BY ELECTRONBACKSCATTERING PATTERNS

A new approach for studying domain structures in ferroelectric materia ls using electron back-scattering patterns (EBSP) is described. The he rringbone-type domain structures in lead titanate single crystals were examined in detail. Three different EBS patterns, representing three possible polarization directions in the tetragonal phase, were obtaine d. Detailed analyses for identifying the major zone axes of the EBS pa tterns were correlated with the results from X-ray powder diffraction. Comparing the results from X-ray analysis and EBSP, the differences i n the measurements of the interzonal angles were observed to be less t han 1 degree. A simple rule for identifying domain structures from EBS patterns was obtained. EBSP provides quick but comparable structural information on domains compared with that from other advanced methods, such as TEM.