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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/087/05/0072

    • Keywords

       

      Transparent oxide; radio-frequency sputtering; optical properties; effect of annealing temperature.

    • Abstract

       

      Transparent metal oxide thin films of samarium oxide (Sm$_2$O$_3$) were prepared on pre-cleaned fused optically flat quartz substrates by radio-frequency (RF) sputtering technique. The as-deposited thin films were annealed at different temperatures (873, 973 and 1073 K) for 4 h in air under normal atmospheric pressure. The topological morphology of the film surface was characterized by using atomic force microscopy (AFM). The optical properties of the as-prepared and annealed thin films were studied using their reflectance and transmittance spectra at nearly normal incident light. The estimated direct optical band gap energy (E$^{d}_{g}$ ) values were found to increase by increasing the annealing temperatures. The dispersion curves of the refractive index of Sm$_2$O$_3$ thin films were found to obey the single oscillator model.

    • Author Affiliations

       

      A A ATTA1 2 M M EL-NAHASS2 KHALED M ELSABAWY3 4 M M ABD EL-RAHEEM1 5 A M HASSANIEN6 A ALHUTHALI1 ALI BADAWI1 AMAR MERAZGA1

      1. Department of Physics, Faculty of Science, Taif University, Taif 888, Saudi Arabia
      2. Department of Physics, Faculty of Education, Ain Shams University, Roxy 11757, Cairo, Egypt
      3. Materials Science Unit, Department of Chemistry, Faculty of Science, Tanta University, 31725 Tanta, Egypt
      4. Department of Chemistry, Faculty of Science, Taif University, Taif 888, Saudi Arabia
      5. Department of Physics, Faculty of Science, Sohag University, Sohag 82524, Egypt
      6. Department of Physics, Faculty of Science and Humanity Studies at Al-Quwayiyah, Shaqra University, Al-Quwayiyah 11971, Saudi Arabia

    • Dates

       
      Published
      16 November 2016
      Manuscript received
      8 November 2015
      Manuscript revised
      23 December 2015
      Accepted
      25 January 2016
      Early published
      7 October 2016

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