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Author Stella, C. ♦ Prabhakar, Diva ♦ Soundararajan, N. ♦ Ramachandran, K.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ABSORPTION ♦ ABSORPTION SPECTRA ♦ COBALT ADDITIONS ♦ CRYSTAL STRUCTURE ♦ DEFECTS ♦ DIELECTRIC MATERIALS ♦ DOPED MATERIALS ♦ MAGNETIC SEMICONDUCTORS ♦ OPTICAL PROPERTIES ♦ PERMITTIVITY ♦ PHOTOLUMINESCENCE ♦ RED SHIFT ♦ SOL-GEL PROCESS ♦ TITANIUM OXIDES ♦ X RADIATION ♦ X-RAY DIFFRACTION
Abstract A diluted magnetic semiconductor (DMS) Co-doped TiO{sub 2} is studied here for dielectric properties. Undoped and Co-doped TiO{sub 2} samples were prepared by sol-gel method. The formation of anatase phase has been investigated by X-ray diffraction (XRD). UV-Vis absorption spectra show that the incorporation of Co into the TiO{sub 2} lattice leads to redshift in the optical response, as well as lowering the band gap energy. The defect oriented emissions were seen from photoluminescence (PL) study. The dielectric properties of pure and Co-doped TiO{sub 2} samples were studied in the frequency range of 10 Hz to 10 MHz at different temperatures. Doped sample exhibit low dielectric constant when compared with host system. Both dielectric constant and ac conductivity increases with temperature.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-23
Publisher Place United States
Volume Number 1731
Issue Number 1


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