Properties of grain-oriented in ternary system based on lead titanate zirconate ceramics

• Published in: Ferroelectrics Vol. 211; no. 1; pp. 249 - 257
• Main Authors: Barranco, A. Peláiz, Pi∼ar, F. Calderón, Guerra, J. De los Santos, Martínez, O. Pérez
• Format: Journal Article
• Language: English
• Published: London Taylor & Francis Group 01-01-1998; Taylor and Francis
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric properties of solids and liquids; Dielectric, piezoelectric, ferroelectric and antiferroelectric materials; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Niobates, titanates, tantalates, pzt ceramics, etc; Permittivity (dielectric function); Physics; Piezoelectricity and electromechanical effects; polycrystalline; Zirconate ceramics; Lanthanum oxides; Inorganic compounds; Thermostimulated conduction; Lead titanates; Transition element compounds; Polycrystals; Ceramics; Rare earth compounds; Electromechanical effects; Experimental study; Lead zirconates; Hot pressing; Dielectric losses; Permittivity
• ISSN: 0015-0193; 1563-5112
• DOI: 10.1080/00150199808232346

Polycrystalline PbZrO
3
-PbTiO
3
+ 2.5mol% La
2
CO
3
was prepared by hot pressing. The electrical and electromechanical properties of grain-oriented samples were measured. The permittivity and thermally stimulated current anisotropies between the parallel and perpendicular direction to the hot pressing axis were studied. The perpendicular sample shows a greater electromechanical coupling factor than that of the parallel sample. On the other hand, the dielectric losses are greater in the second case. These anisotropies are higher than those of other ferroelectric ceramics reported using the same preparation technique.