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Description
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 |
Degree: | Ph.D. |
Genre: | Dissertation |
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 |
Type: | Text |
Language: | English |
Description: | 141 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008. |
URI: | http://hdl.handle.net/2142/82824 |
Other Identifier(s): | (MiAaPQ)AAI3337718 |
Date Available in IDEALS: | 2015-09-25 |
Date Deposited: | 2008 |
This item appears in the following Collection(s)
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Dissertations and Theses - Materials Science and Engineering
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Graduate Dissertations and Theses at Illinois
Graduate Theses and Dissertations at Illinois