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Title:Electrically induced antiferroelectric-ferroelectric phase transformations in lead-zirconate titanate stannate ceramics
Author(s):Yang, Pin
Doctoral Committee Chair(s):Payne, David A.
Department / Program:Materials Science and Engineering
Discipline:Materials Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Electronics and Electrical
Engineering, Mechanical
Engineering, Materials Science
Abstract:Antiferroelectric(AFE)-ferroelectric(FE) phase transformations in the tin modified lead zirconate-lead titanate (Pb(Zr,Sn,Ti)O$\sb3,$ i.e., PZST) system were investigated. The field-induced transformation behavior was studied as a function of temperature, pressure, and microstructure. Emphasis is placed on (i) the thermal stability of the AFE-FE transformation, including thermal hysteresis, (ii) microstructure-property relations, and (iii) electromechanical response of the field-induced transformation behavior for actuator applications. A thermodynamic model is proposed to account for the thermal stability of the field-induced transformation characteristics, including reversible and irreversible phenomena. Results are interpreted in terms of thermodynamic relations, and are shown to be interrelated and self-consistent. Fundamental issues underlying the thermodynamic relationships are discussed from the perspective of lattice dynamics theory.
Issue Date:1992
Rights Information:Copyright 1992 Yang, Pin
Date Available in IDEALS:2011-05-07
Identifier in Online Catalog:AAI9305742
OCLC Identifier:(UMI)AAI9305742

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