Influence of Ce doping on optical and dielectric properties of TiO{sub 2}

Journal Article · Fri May 06 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4946364· OSTI ID:22606432

Naseem, Swaleha; Khan, Wasi; Naqvi, A. H. ^[1]

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1. Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z.H. College of Engg. & Technology, Aligarh Muslim University, Aligarh 202002 (India)

Rare earth ion (Ce) doped TiO{sub 2} and pure TiO{sub 2} nanostructured were prepared by sol gel acid modified technique and calcinated at 450°C. Microstructural studies and thermal analysis were carried by XRD and TGA respectively. The results of structural characterization show the formation of all samples in single phase without any impurity. Optical properties were studied by UV- visible spectroscopy and band gap energy was estimated 3.04 eV and 3.14 eV for pure and Ce doped TiO{sub 2} respectively. Room temperature dielectric constant (ε’) decreases abruptly at lower frequencies owing to the charge transport relaxation. The observed behavior of the dielectric properties can be attributed on the basis of Koop’s theory based on Maxwell-Wagner’s two layer model in studied nanoparticles.

• OSTI ID: 22606432
• Journal Information: AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 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

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERIUM ADDITIONS
CHARGE TRANSPORT
DIELECTRIC MATERIALS
DOPED MATERIALS
IMPURITIES
LAYERS
MICROSTRUCTURE
NANOPARTICLES
NANOSTRUCTURES
OPTICAL PROPERTIES
PERMITTIVITY
RARE EARTHS
RELAXATION
SOL-GEL PROCESS
SPECTROSCOPY
TEMPERATURE RANGE 0273-0400 K
THERMAL GRAVIMETRIC ANALYSIS
TITANIUM OXIDES
X-RAY DIFFRACTION