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      https://www.ias.ac.in/article/fulltext/boms/039/02/0491-0498

    • Keywords

       

      Chalcogenides; optical parameters; elastic moduli; electronic polarizability.

    • Abstract

       

      The present study deals with the effect of composition on the elastic and optical properties of Ge$_x$Se$_2$Sb$_{1−x}$ ($0.0 \le x \le 1.0$) glasses. The various elastic moduli of these glasses such as Young’s modulus ($Y$) andthe bulk modulus ($B$) along with the micro-hardness ($H$), Poisson’s ratio ($\rho$) and Debye temperature ($T_D$) were obtained from the values of the longitudinal ($v_l$) and shear ($v_s$) ultrasonic velocities. On the basis of measurementsof the transmittance and reflectance spectra in the wavelength range of 0.4–2.5 $\mu$m the optical constants such as the film thickness ($t$), the refractive index ($n$) and the optical band gap ($E_g$) were investigated with high accuracy. The optically determined bulk modulus of these glasses was in good agreement with that elastically investigated. The obtained results were discussed in terms of the changes in the glass density, electronegativity and electronic polarizability with the variation in antimony content.

    • Author Affiliations

       

      K A ALY1 2 N AFIFY3 Y B SADDEEK2 A M ABOUSEHLY2

      1. Physics Department, Faculty of Science and Arts Khulais, Jeddah University, P.O. Box 80200, 21589 Khulais, Saudi Arabia
      2. Physics Department, Faculty of Science, Al-Azhr University (Assiut Branch), Assiut 71524, Egypt
      3. Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
    • Dates

       
  • Bulletin of Materials Science | News

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