"Mg-doped LaCrO3 and La-doped SrTiO3 are perovskite compounds that display electrical conductivity which is a function of partial pressure of oxygen (po2). It has been proposed that acceptor-doped LaCrO3 becomes highly resistive at low po2's due to ionic compensation of the acceptor-dopant present by oxygen vacancies. SrTiO3 has been thought to absorb O2 into a crystallographic shear structure and exsolve strontium vacancies which can then ionically compensate the La present and give a high resistance at high po2's.
Given these models, relationships between weight loss and conductivity vs. po2 are developed for both these materials and compared to experiment. Positive confirmation of the models was found, however SrTiO3 displayed a mobility that was a function of temperature and strontium vacancy concentration"--Abstract, page ii.
Anderson, H. U. (Harlan U.)
Sparlin, Don M.
Kreidl, N. J.
Morris, Arthur E., 1935-
Moore, Robert E., 1930-2003
Materials Science and Engineering
Ph. D. in Ceramic Engineering
University of Missouri--Rolla
xv, 141 pages
© 1984 Brian Keith Flandermeyer, All rights reserved.
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Flandermeyer, Brian Keith, "Thermogravimetric and electrical conductivity studies of Mg-doped LaCrO₃ and La-doped SrTiO₃" (1984). Doctoral Dissertations. 551.
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