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Title:Potassium Sodium Bismuth Titanate Ceramics: Processing and Property Relationships for Higher-Temperature Electromechanical Actuation
Author(s):Carroll, James F., III
Doctoral Committee Chair(s):Payne, David A.
Department / Program:Materials Science and Engineering
Discipline:Materials Science and Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Materials Science
Abstract:The role of potassium content on properties was identified by X-ray powder diffraction, dielectric measurements and field-induced polarization and strain studies. The lowest transition temperature (and subsequently the highest electromechanical activity) was obtained at the morphotropic boundary composition (x = 0.2). Higher potassium contents stabilized the ferroelectric piezoelectric region to higher temperatures. For x = 0.6, the transition temperature increased to 260°C, with a relatively stable d333 = 150--145.10 -12 m/V between 25°C and 200°C. Thus, by tailoring the potassium content, actuator materials could be designed for higher-temperature applications.
Issue Date:2008
Description:141 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.
Other Identifier(s):(MiAaPQ)AAI3337718
Date Available in IDEALS:2015-09-25
Date Deposited:2008

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