Effects of Excess PbO Addition on the Properties of Ferroelectric Doped PZT Ceramics

• Published in: Materials research bulletin Vol. 33; no. 4; pp. 569 - 574
• Main Authors: Megriche, A, Troccaz, M
• Format: Journal Article
• Language: English
• Published: London Elsevier Ltd 01.04.1998; Amsterdam Elsevier Science
• Subjects: A. ceramics; B. chemical synthesis; Condensed matter: electronic structure, electrical, magnetic, and optical properties; D. dielectric properties; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Niobates, titanates, tantalates, pzt ceramics, etc; Physics; Piezoelectric and electrostrictive constants; Piezoelectricity and electromechanical effects; B. chemical synthesis; A. ceramics; D. dielectric properties; Inorganic compounds; Transition element compounds; Doped materials; Lead oxides; Ceramics; PZT; Experimental study; Titanium oxides; Strontium oxides; Manganese oxides; Ferroelectric materials; Zirconium oxides; Niobium oxides; Piezoelectricity
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/S0025-5408(98)00014-2

The influence of a PbO excess in the PZT composition Pb 0.92 + xSr 0.08(Zr 0.515Ti 0.455Nb 0.02Mn 0.01)O 3 + x (0 < x < 0.12) was investigated. A sintering method was chosen for the ceramics manufacture. Weight-loss experiments were performed to compare the final PbO content values to the theoretical x, and a nearly stoichiometric area was observed for 0.04 < x < 0.08, corresponding to optimal piezoelectric coefficients. Substitution of Mn ion in a +2 or +4 valency state was studied. Measurements of vibration velocities with a view to ultrasonic motors application were carried out.