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Optical Characteristics of Strontium Titanate Films Formed by Sol-Gel Method on Quartz Substrates

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The transmission spectra of films of strontium titanate up to 200 nm thick produced on quartz glass substrates by the sol-gel method were investigated in the region of 200–1100 nm. The sol was prepared from strontium acetate, titanium tetraisopropoxide, acetic acid, and ethylene glycol monomethyl ether. The strontium titanate films were formed by successive deposition of five layers with intermediate drying of each layer and final heat treatment at temperatures in the range of 500–700oC. From analysis of the transmission spectra it was established that the obtained films are characterized by a wide forbidden band decreasing from 4.46 to 3.84 eV in the transition from x-ray amorphous films to crystalline films with refractive index of 1.996 (λ = 620 nm) due to the high packing density of up to 81.5% of that for monocrystalline strontium titanate.

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Authors and Affiliations

  1. Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, 9/1 Surganov Str, 220072, Minsk, Belarus

    A. I. Kulak

  2. Belarus State University of Informatics and Radioelectronics, Minsk, Belarus

    H. Sohrabi Anaraki, N. V. Gaponenko, L. S. Khoroshko & P. A. Kholov

  3. B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus

    T. F. Raichyonok

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  1. A. I. Kulak
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  2. H. Sohrabi Anaraki
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  3. N. V. Gaponenko
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  4. L. S. Khoroshko
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  5. P. A. Kholov
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  6. T. F. Raichyonok
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Correspondence to A. I. Kulak.

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Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 84, No. 1, pp. 150–153, January–February, 2017.

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Kulak, A.I., Sohrabi Anaraki, H., Gaponenko, N.V. et al. Optical Characteristics of Strontium Titanate Films Formed by Sol-Gel Method on Quartz Substrates. J Appl Spectrosc 84, 132–135 (2017). https://doi.org/10.1007/s10812-017-0439-x

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  • DOI: https://doi.org/10.1007/s10812-017-0439-x

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