Abstract
A semiempirical model of the Seebeck coefficient for a small polaron hopping conductor is presented. The population of small polarons is allowed to change as a function of temperature via the mechanism of charge disproportionation. The energy required for polaron formation by the disproportionation mechanism is modeled as screened by a Coulomb interaction with nearby small polarons. The charge carrier site occupancies generated by the model are used to successfully predict the electrical conductivity and Seebeck coefficient for compositions in the La1-xCaxCoO3 system. Cobalt ion valence populations predicted by the model are used to calculate effective paramagnetic moments for LaCoO3, which are favorably compared to those found experimentally. © 1995 The American Physical Society.
Recommended Citation
S. R. Sehlin et al., "Semiempirical Model for the Electrical Properties of La1-XCaxCoO3," Physical Review B, vol. 52, no. 16, pp. 11681 - 11689, American Physical Society, Jan 1995.
The definitive version is available at https://doi.org/10.1103/PhysRevB.52.11681
Department(s)
Materials Science and Engineering
Second Department
Physics
International Standard Serial Number (ISSN)
0163-1829
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
01 Jan 1995
