Dipole Ordering or Disordering in Selected Perovskite Ferroelectric Systems
Friddle, Phillip A.
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https://hdl.handle.net/2142/82767
Description
Title
Dipole Ordering or Disordering in Selected Perovskite Ferroelectric Systems
Author(s)
Friddle, Phillip A.
Issue Date
2005
Doctoral Committee Chair(s)
Chen, Haydn
Department of Study
Materials Science and Engineering
Discipline
Materials Science and Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Materials Science
Language
eng
Abstract
The microstructural and electrical properties of several compositions of BSZT bulk ceramics were studied. The ceramics were found to be single phase cubic perovskites at room temperature. The substitution of zirconium for titanium in Ba0.7Sr0.3TiO3 in bulk ceramic form increases the disorder in the system gradually changing the electrical behavior from a normal ferroelectric to a strongly relaxor system. These transitions were examined using Curie-Weiss and Vogel-Fulcher fitting.
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