Effect of cobalt doping on structural, optical and dielectric properties of TiO{sub 2}
- School of Physics, Madurai Kamaraj University, Madurai – 625 021 (India)
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.
- OSTI ID:
- 22606273
- Journal Information:
- AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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