The electrical conductivity and microstructure properties of Ni-doped TiO2 ceramic


Yakuphanoglu F., Okutan M. , Korkmaz K.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.450, pp.39-43, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 450
  • Publication Date: 2008
  • Doi Number: 10.1016/j.jallcom.2006.10.117
  • Title of Journal : JOURNAL OF ALLOYS AND COMPOUNDS
  • Page Numbers: pp.39-43

Abstract

The electrical, microstructure and crystal structure properties of Ni-doped TiO2 were investigated. The microstructure and crystal structure of Ni-doped TiO2 were analyzed by the scanning electron microscopy and X-ray diffraction techniques. The alternating conductivity (AC) and direct current conductivity (DC) properties of Ni-doped TiO2 have been investigated. DC conductivity exhibits a semiconductor behavior with the temperature. AC and DC measurements suggest that variable-range hopping (VRH) conduction is dominated by hopping of carriers between localized states at lower temperatures. At higher temperatures, the conduction mechanism of the sample is constant-range hopping charge transport. (c) 2006 Elsevier B.V. All rights reserved.