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

Yakuphanoglu F., Okutan M., Korkmaz K.

JOURNAL OF ALLOYS AND COMPOUNDS, cilt.450, ss.39-43, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 450
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1016/j.jallcom.2006.10.117
  • Dergi Adı: JOURNAL OF ALLOYS AND COMPOUNDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.39-43
  • Yıldız Teknik Üniversitesi Adresli: Hayır

Özet

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.