Electrical and Ferroelectric Properties of Undoped and Er-Doped PZT52/48 Electroceramics Synthesized by a Polymeric Precursor Method

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 25; p. 1
• Main Authors: Caceres, Jaime Alberto Sanchez, Passos, Carlos Augusto Cardoso
• Format: Journal Article
• Language: English; Portuguese
• Published: Sao Carlos Universidade Federal do Sao Carlos, Departamento de Engenharia de Materiais 01.01.2022; ABM, ABC, ABPol; Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
• Subjects: Ceramics; Curie-Weiss law; Densification; dielectric properties; Electrical properties; ENGINEERING, CHEMICAL; ferroelectric; Ferroelectric materials; Ferroelectricity; High temperature; MATERIALS SCIENCE, MULTIDISCIPLINARY; METALLURGY & METALLURGICAL ENGINEERING; Phase transitions; Prepolymers; PZT-based; Zirconium; ferroelectric; PZT-based; electrical properties; dielectric properties
• ISSN: 1516-1439; 1980-5373; 1980-5373
• DOI: 10.1590/1980-5373-MR-2020-0538

The effect of Er on the structural and electrical properties of doped PZT 52/48 ceramics has been studied in this work. The ferroelectric properties (permittivity, ferro-paraelectric phase transition and hysteresis) of such materials are thus found to be strongly dependent on the degree of densification and structural phase development during sintering at high temperatures. In particular, the nature of the ferroelectric to paraelectric phase transition is in these materials that can be represented through the Curie-Weiss Law equation modified, appropriate for the characterization diffuse transitions. The substitution of Er3+ for (Zr,Ti)4+ is found to induce strong diffuse phase transition in these materials. The electrical properties reported in this work are in magnitude comparable to those exhibited by PZT52/48 materials.