Acoustic emission and domain switching in tetragonal lead zirconate titanate ceramics

• Published in: Japanese Journal of Applied Physics 1994, Vol.33 (9B), p.5555-5558
• Main Authors: SAITO, Y, HORI, S
• Format: Article
• Language: English
• Subjects: Acoustical properties of solids; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Mechanical and acoustical properties of condensed matter; Niobates, titanates, tantalates, pzt ceramics, etc; Physics; Piezoelectricity and electromechanical effects
• ISSN: 0021-4922; 1347-4065
• DOI: 10.1143/jjap.33.5555

The electric field-induced acoustic emission (AE) in a poled tetragonal lead zirconate titanate (PZT) ceramic was measured at room temperature and related to the polarization switching, field-induced strain, dielectric constant, and piezoelectric constant in the high-voltage electric field. The AE signals became most remarkable when the polarization approached the saturation, while they became minimal when the polarization reversal occurred. The AE count, expressed as a function of electric field, exhibited a hysteresis loop similar to the strain loop. These data suggest that the AE signals were generated by the strain due to 90° domain switching rather than the piezoelectric strain.