AC conductivity and dielectric properties of Co-doped TiO2

Okutan M., Başaran E., Bakan H. İ., Yakuphanoglu F.

PHYSICA B-CONDENSED MATTER, vol.364, pp.300-305, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 364
  • Publication Date: 2005
  • Doi Number: 10.1016/j.physb.2005.04.027
  • Journal Name: PHYSICA B-CONDENSED MATTER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.300-305
  • Yıldız Technical University Affiliated: No

Abstract

The alternating current (AC) conductivity and dielectric properties of the Co-doped TiO2, were investigated. The temperature dependence of AC conductivity and the parameter s, is reasonably well interpreted by the correlated barrier hopping (CBH) model. The activation energy (E), and the density of states at Fermi level, N(E-1) were determined. The dielectric constant decreases with frequency at low frequencies and increases at high frequencies. (c) 2005 Elsevier B.V. All rights reserved.