Structure-property relationships and phase stability in the tin-modified lead zirconate titanate crystalline solution series

This thesis will try to explain the influence of Sn on the phase stability and the transformational characteristics of high zirconium content lead zirconate titanate (PZT) ceramics. First, microstructural studies were done as a function of titanium content. An incommensurate phase was observed across much of the compositional range and was defined by the appearance of superlattice reflections along the $$ direction which were not rational multiples of the fundamental periodicity along that direction. The incommensurate modulation wavelength, $\lambda,$ was found to increase as the Ti content and the temperature were increased. Another phase region was found with decreasing temperature, designated as the metastably-locked incommensurate state, where the polarization modulations are believed to be pinned by the quenched Sn impurities. This metastably-locked incommensurate region was previously believed to be tetragonal, however results presented in this thesis will show it actually has orthorhombic symmetry.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Materials Science and Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Forst, Donald William

Contributors dc:contributor

• Viehland, Dwight D.

• Physics, Condensed Matter
• Engineering, Materials Science

Statement dc:rights

• Copyright 1996 Forst, Donald William

Language dc:language

eng

Identifier

9780591087574
AAI9702515
(UMI)AAI9702515

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19230