Thermal and Structural Properties of Erbium/Neodymium Co-Doped Lithium-Magnesium-Tellurite Glass

Abstract:

Detailed characterizations of inorganic glasses via optimized rare earth doping/co-doping are challenging. Tellurite glasses with composition (78-x)TeO₂-10Li₂O-10MgO-2Nd₂O₃-xEr₂O₃, (where x = 0.4 to 2.0 mol%) are prepared by melt-quenching technique. The effects of Er₂O₃ concentration on the thermal stability and structural properties are examined. The X-ray diffraction pattern confirms the glassy nature of all samples. The temperature of glass transition (T_g), crystallization (T_c), melting (T_m) and the difference (T_c-T_g) are determined by differential thermal analyser (DTA). The values of T_c, T_g and T_m are found to vary in the range of 419-430 °C, 300-345 °C and 885-890 °C, respectively. The glass sample with 0.4 mol% Er₂O₃ shows highest thermal stability. The FTIR spectra measured in the range of 400 - 4000 cm¹ exhibits two major absorption peaks around 1600 - 3600 cm¹ and 900 - 1200 cm¹ assigned to the stretching vibrational mode of OH and Te-OH respectively. Improvements in the optical and thermal properties due to co-doping may be useful for the development of tellurite glass based photonics.

• Periodical: Advanced Materials Research (Volume 1107)
• Pages: 466-470
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1107.466
• Online since: June 2015
• Authors: Ramli Arifin*, Syaridatul Akmar Roslan, M.R. Sahar, S.K. Ghoshal, K. Hamzah
• Keywords: Structural Properties, Tellurite Glass, Thermal Properties

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