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University of Illinois at Urbana-Champaign
Potassium Sodium Bismuth Titanate Ceramics: Processing and Property Relationships for Higher-Temperature Electromechanical Actuation
Abstract
dc:descriptionThe 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.
Degree
thesis:*- 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
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Carroll, James F., III
- Contributors dc:contributor
-
- Payne, David A.
Subjects
dc:subject × 1Rights
- Language dc:language
- eng
Identifiers
dc:identifier.*- Identifier
- (MiAaPQ)AAI3337718
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/82824