PIEZOELECTRIC COMPOSITION, PIEZOELECTRIC CERAMIC, VIBRATOR, AND ULTRASONIC MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric composition which has excellent piezoelectric properties, and thus, is made suitable for a piezoelectric ceramic having reduced heat generation upon driving.;SOLUTION: The piezoelectric composition includes a compound expressed by a general expression: Bi₄Ti₃O₁₂-SrBi₄Ti₄O₁₅ as a main component; and Mn or an Mn compound as an additive. An Mn content is less than 1.0 mass% based on a main component amount.;COPYRIGHT: (C)2012,JPO&INPIT