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R. SENGODAN1,* , B. CHANDRA SHEKAR2,*
- Department of Physics, Kumaraguru College of Technology, Coimbatore – 641049, Tamil Nadu, India
- Department of Physics, Kongunadu Arts and Science College, G.N- Mills, Coimbatore – 641029, Tamil Nadu, India
In the present work, the prepared nano powders were thermally grown onto well cleaned glass substrates under the vacuum of 10-5 torr, using 12A4 Hind Hivac coating unit. The X-ray diffraction patterns shown that Sr doped BaTiO3 nanoparticles possess tetragonal structure and the deposited films were polycrystalline in nature. Absorption coefficient, extinction coefficient, optical band gap and refractive index of films were estimated from optical transmittance spectrum. The extinction coefficient of films decreases with increase in thickness and refractive index of the films increases with increase in thickness. The optical band gap energy value various from 3.90eV to3.75eV with increase of thickness..
Sr doped batio3, Thermal evaporation, UV-Visible.
Submitted at: Sept. 1, 2019
Accepted at: June 16, 2020
R. SENGODAN, B. CHANDRA SHEKAR, Optical properties of strontium doped BaTiO3 thin films by thermal evaporation method for optoelectronic devices, Journal of Optoelectronics and Advanced Materials Vol. 22, Iss. 5-6, pp. 280-285 (2020)
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