Maier, R.
(2016),
Low Temperature Ionic Conductivity of an Acceptor Doped Perovskite Part I: Impedance Spectroscopy of Single Crystalline SrTiO3, Journal of the American Ceramic Society, [online], https://doi.org/10.1111/jace.14348
(Accessed December 21, 2024)
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Low Temperature Ionic Conductivity of an Acceptor Doped Perovskite Part I: Impedance Spectroscopy of Single Crystalline SrTiO3
Published
Author(s)
Abstract
Low temperature conductivity mechanisms are identified in acceptor doped SrTiO3 single crystals quenched from high temperatures under reducing conditions. Impedance spectroscopy measurements on samples of the prototypical perovskite structure doped with iron provides a framework for creating a complete conductivity model for a well-defined point defect system. Dominant conductivity mechanisms are identified in the room temperature range as being controlled by oxygen vacancy ionic hopping. The activation energy for oxygen vacancy migration, an often debated value in the perovskite community, is determined to lie within the range of ~0.6- 0.75eV.Citation
Journal of the American Ceramic Society
Volume
99
Issue
10
Pub Type
Journals
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Keywords
oxygen vacancy, ionic conduction, perovskite, impedance spectroscopy
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Created June 18, 2016, Updated November 10, 2018