Doctoral Dissertations
Abstract
"High temperature electrical conductivity, Seebeck coefficient, and thermogravimetric measurements were made as a function of oxygen activity to investigate the electrical transport behavior and defect structure of Ca-doped YCrO3. Defect models were developed to correlate the electrical conductivity and thermogravimetric data by relating the concentration of charge carriers to the acceptor dopant and oxygen vacancy concentrations. These relations were found to adequately explain the experimental data. Thermodynamic properties were calculated which were consistent with the model. Calculations of the carrier concentrations, the activation energies, and the mobilities were also performed. The analysis of the electrical conductivity, Seebeck and mobility data suggested that the conduction process in Ca-doped YCrO3 occurs via the small polaron hopping mechanism. Kroger-Vink diagrams showing the regions of stability with respect to oxygen activity and temperature were constructed"--Abstract, page iii.
Advisor(s)
Anderson, H. U. (Harlan U.)
Committee Member(s)
Sparlin, Don M.
Moore, Robert E., 1930-2003
Leighly, Hollis P., 1923-2004
Rahaman, M. N., 1950-
Department(s)
Materials Science and Engineering
Degree Name
Ph. D. in Ceramic Engineering
Sponsor(s)
United States. Department of Energy
Publisher
University of Missouri--Rolla
Publication Date
Fall 1990
Pagination
xi, 100 pages
Note about bibliography
Includes bibliographical references (pages 93-99).
Rights
© 1990 George Francis Carini, II, All rights reserved.
Document Type
Dissertation - Restricted Access
File Type
text
Language
English
Subject Headings
Electric conductivity -- MeasurementThermoelectric materialsThermal conductivity
Thesis Number
T 6114
Print OCLC #
24114620
Electronic OCLC #
905014553
Recommended Citation
Carini, George Francis II, "Electrical conductivity, Seebeck coefficient, and defect structure of Ca-doped YCrO₃" (1990). Doctoral Dissertations. 803.
https://scholarsmine.mst.edu/doctoral_dissertations/803
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