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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15324
Title: Effect of thermal annealing on the structure and microstructure of TiO 2 thin films
Authors: Rath H.
Anand S.
Mohapatra M.
Dash P.
Som T.
Singh U.P.
Mishra N.C.
Published in: Indian Journal of Physics
Abstract: Nanostructured TiO2 thin films have been prepared through chemical route using sol-gel and spin coating techniques. The deposited films were annealed in the temperature range 400-1000°C for 1 h. The structure and microstructure of the annealed films were characterized by GAXRD, micro-Raman spectroscopy and AFM. The as-deposited TiO2 thin films are found to be amorphous. Micro-Raman and GAXRD results confirm the presence of the anatase phase and absence of the rutile phase for films annealed up to 700°C. The diffraction pattern of the film annealed at 800 to 1000°C contains peaks of both anatase and rutile reflections. The intensity of all peaks in micro-Raman and GAXRD patterns increased and their width (FWHM) decreased with increasing annealing temperature, demonstrating the improvement in the crystallinity of the annealed films. Phase transformation at higher annealing temperature involves a competition among three events such as: grain growth of anatase phase, conversion of anatase to rutile and grain growth of rutile phase. AFM image of the asdeposited films and annealed films indicated exponential grain growth at higher temperature. © 2009 IACS.
Citation: Indian Journal of Physics, (2009), 559- 565
URI: http://repository.iitr.ac.in/handle/123456789/15324
Issue Date: 2009
Keywords: Nucleation and growth
Spin coating
TiO2 thin film
ISSN: 9731458
Author Scopus IDs: 55397429100
35462440100
7003436412
57197044068
7003595645
57203181883
35466198800
Author Affiliations: Rath, H., Department of Physics, Utkal University, Bhubaneswar-751 004, Orissa, India
Anand, S., Institute of Minerals and Materials Technology, Bhubaneswar-751 013, Orissa, India
Mohapatra, M., Institute of Minerals and Materials Technology, Bhubaneswar-751 013, Orissa, India
Dash, P., Department of Physics, Utkal University, Bhubaneswar-751 004, Orissa, India
Som, T., Institute of Physics, Bhubaneswar-751 005, Orissa, India
Singh, U.P., KIIT University, Bhubaneswar-751 024, Orissa, India
Mishra, N.C., Department of Physics, Utkal University, Bhubaneswar-751 004, Orissa, India
Funding Details: We thank Dr. P V Satyam of Institute of Physics, Bhubaneswar for many valuable discussions and the UGC-DAE Consortium for Scientific Research, Kolkata for their financial support for this project.
Corresponding Author: Rath, H.; Department of Physics, Utkal University, Bhubaneswar-751 004, Orissa, India; email: haripriyarath@gmail.com
Appears in Collections:Conference Publications [CY]

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