Mechanism of Conduction in Li-Substituted Transition Metal Oxides

• R. R. Heikes

  Westinghouse Research Laboratories, Pittsburgh 35, Pennsylvania

• W. D. Johnston

  Westinghouse Research Laboratories, Pittsburgh 35, Pennsylvania

抄録

A study of the effect of Li substitution on the electrical properties of the oxides MnO, CoO, NiO, and CuO has been made. It has been found that (1) the activation energy for conduction increases abruptly near the antiferromagnetic Curie point; (2) as Li is added the activation energy and resistivity initially decrease rapidly and then level off in the neighborhood of 2% substituted Li; (3) this initial decrease becomes progressively greater in going from MnO to CuO in the sequence of the periodic table. A rather complete understanding of these materials can be had by treating the conduction process as a thermally activated diffusion of positive holes which are trapped by the local strain induced by their own polarization field. The magnitude of the activation energy will be related to the work done against elastic forces necessary to reduce the local strain at a positive hole to zero.

収録刊行物

• The Journal of Chemical Physics

  The Journal of Chemical Physics 26 (3), 582-587, 1957-03-01

  AIP Publishing

キーワード

• Physical and Theoretical Chemistry
• General Physics and Astronomy

詳細情報

• CRID: 1364233270675363584
• NII論文ID: 30015712039
• DOI: 10.1063/1.1743350
• ISSN: 10897690
• ISSN: 00219606
• Web Site: https://pubs.aip.org/aip/jcp/article-pdf/26/3/582/18811593/582_1_online.pdf
• データソース種別:
  • Crossref
  • CiNii Articles