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Effect of Ti doping on the electrical transport and magnetic properties of layered compound Na0.8CoO2

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
135
Issue
8
Identifiers
DOI: 10.1016/j.ssc.2005.05.047
Keywords
  • B. Chemical Synthesis
  • D. Electronic Transport

Abstract

Abstract Effect of Ti doping on the electrical transport and magnetic properties of layered Na 0.8Co 1− x Ti x O 2 compounds has been investigated. The lattice parameters a and c increase with x. A minor amount of Ti doping results in a metal–insulator transition at low temperatures. For samples with x>0.03, the variable-range hopping process dominates the transport behavior above a certain temperature. The temperature dependence of magnetization of all the samples is found to obey the Curie–Weiss law. The mechanism of the doping effect is discussed.

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