title: The effect of remelting on the physical properties of borotellurite glass doped with manganese.
abstract: A systematic set of borotellurite glasses doped with manganese (1-x) [(B(2)O(3))(0.3)(TeO(2))(0.7)]-xMnO, with x = 0.1, 0.2, 0.3 and 0.4 mol%, were successfully synthesized by using a conventional melt and quench-casting technique. In this study, the remelting effect of the glass samples on their microstructure was investigated through density measurement and FT-IR spectra and evaluated by XRD techniques. Initial experimental results from XRD evaluation show that there are two distinct phases of glassy and crystallite microstructure due to the existence of peaks in the sample. The different physical behaviors of the studied glasses were closely related to the concentration of manganese in each phase. FTIR spectra revealed that the addition of manganese oxide contributes the transformation of TeO(4) trigonal bipyramids with bridging oxygen (BO) to TeO(3) trigonal pyramids with non-bridging oxygen (NBO).
authors.affiliation: Glass and Ultrasonics Studies Centre (GUSC), Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. sidek@science.upm.edu.my.
authors.forename: Syed Putra Hashim Syed
authors.initials: SP
authors.lastname: Hashim
authors.forename: Haji Abdul Aziz
authors.initials: HA
authors.lastname: Sidek
authors.forename: Mohamed Kamari
authors.initials: MK
authors.lastname: Halimah
authors.forename: Khamirul Amin
authors.initials: KA
authors.lastname: Matori
authors.forename: Wan Mohamad Daud Wan
authors.initials: WM
authors.lastname: Yusof
authors.forename: Mohd Hafiz Mohd
authors.initials: MH
authors.lastname: Zaid
mesh_terms: D001895:Boron / Q000737:chemistry*; D001896:Boron Compounds / Q000737:chemistry; D005898:Glass / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry*; D017895:Manganese Compounds / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D055585:Physical Phenomena; D017550:Spectroscopy, Fourier Transform Infrared; D013691:Tellurium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D001896:Boron Compounds; D017895:Manganese Compounds; D010087:Oxides; D008345:Manganese; C042168:boron oxide; C027424:manganese oxide; D001895:Boron; D013691:Tellurium; D010100:Oxygen