Study the Effect of Substrate Temperature on the Optical Properties of CoFe2O4 Films Prepared by Chemical Spray Pyrolysis Method

Salman, Sabah A.; Khodair, Ziad T.; Abed, Sahar J.

doi:10.18052/www.scipress.com/ILCPA.61.118

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Study the Effect of Substrate Temperature on the Optical Properties of CoFe₂O₄ Films Prepared by Chemical Spray Pyrolysis Method

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Abstract:

Cobalt Ferrite CoFe₂O₄ thin films have been deposited by chemical spray pyrolysis method (CSP) on glass substrates at different substrate temperatures (300, 350, 400 and 450°C) with an interval of (50°C) using Cobalt Nitrate and Ferric Nitrate as Cobalt and Iron sources respectively, at thickness (400±20) nm. The effect of substrate temperatures change on the optical properties for all prepared films was studied. The optical properties for all the films were studied by recording the transmittance and absorbance spectrum in the range of (300-900) nm. The results showed decreases in transmittance and increases in absorbance with increasing the substrate temperatures. the optical energy gap for allowed direct electronic transition was calculated and it was found that decreases with increasesing the substrate temperatures (2.40-2.22 eV), the Urbach energy increases with increasesing the substrate temperatures and it is values range between (634.6-700.5) meV. The optical constants (absorption coefficient, refractive index, extinction coefficient, real and imaginary parts of dielectric constant and optical conductivity) as a function of photon energy for all prepared films were calculated.

Info:

Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 61)

Pages:

118-127

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.61.118

Citation:

S. A. Salman et al., "Study the Effect of Substrate Temperature on the Optical Properties of CoFe₂O₄ Films Prepared by Chemical Spray Pyrolysis Method", International Letters of Chemistry, Physics and Astronomy, Vol. 61, pp. 118-127, 2015

Online since:

November 2015

Authors:

Sabah A. Salman, Ziad T. Khodair, Sahar J. Abed

Keywords:

Chemical Spray Pyrolysis, CoFe₂O₄ Thin Films, Optical Properties

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Open Access

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Creative Commons Attribution 4.0 International License

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Cited By:

[1] S. Perumbilavil, A. López-Ortega, G. Tiwari, J. Nogués, T. Endo, R. Philip, "Enhanced Ultrafast Nonlinear Optical Response in Ferrite Core/Shell Nanostructures with Excellent Optical Limiting Performance", Small, Vol. 14, p. 1701001, 2018

DOI: https://doi.org/10.1002/smll.201701001