Inclusion of Dy, Ho and Er in B sites of modified lead titanate

摘要

In recent years, attention has been paid by several workers to the large electromechanical (kt/kp→∞) anisotropy phenomenon in modified lead titanate ceramics [1-3]. This peculiar property makes these ceramics suitable for use for high-frequency (7.5 MHz) array transducers, since the spurious wave generation in the acoustic signal is very small for lateral vibration in contrast with traditional transdu-cers based on lead zirconate titanate ceramics [1].