Thermal study and linear optical properties of (1 - x)TeO2-(x)PbF2 (x = 0.10, 0.15 and 0.25 mol) glasses

被引：0
|
作者：
Kabalci, I. [1 ]
Özen, G. [1 ]
Öveçoǧlu, M.L. [2 ]
Sennaroǧlu, A. [3 ]
机构：
[1] Department of Physics, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
[2] Department of Metallurgical and Materials Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
[3] Department of Physics, Koç University, Sariyer, 34450 Istanbul, Turkey
来源：
Journal of Alloys and Compounds | 2006年 / 419卷 / 1-2期
关键词：
The (1 - x)TeO2-xPbF2 binary glass system was investigated by differential thermal analysis (DTA) and ultraviolet-visible-near-infrared (UV-VIS-NIR) absorption spectrophotometer. Samples were prepared by melting the mixture of TeO2 and PbF2 in a platinum crucible at 800 °C in air. Glass transition and the crystallization temperatures as function of the glass composition were measured by DTA. An exothermic peak of crystallization temperature was observed at about 340 ± 1 °C for all three samples. A second peak of peak crystallization temperature was observed at about 400 °C for only the sample with 0.15 mol PbF2. The mechanism and the activation energy for each crystallization peak were determined from the DTA curves measured with different heating rates between 5 and 20 °C/min. The mechanism of the crystallization was found to be surface crystallization for the first exothermic peak for only 0.15 mol PbF2 sample; on the other hand; bulk crystallization was found for all samples. Corresponding activation energies are 814; 748; and 387 kJ/mol for the samples with 0.10; 0.15; and; 0.25 mol PbF2; respectively. The mechanism and the activation energy for the second exothermic peak observed in the sample with 0.15 mol PbF2 were found to be bulk crystallization and 415 kJ/mol; respectively. The optical band gap; and Urbach energies were calculated from the absorption spectra measured between 300 and 800 nm at room temperature. The optical bandgap varies from 2.02 to 1.90 eV when the PbF2 content increases from 0.10 to 0.25 mol in the glass matrix. © 2005 Elsevier B.V. All rights reserved;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：294 / 298
相关论文
共 50 条
  • [1] Thermal study and linear optical properties of (1-x)TeO2-(x)PbF2 (x=0.10, 0.15 and 0.25 mol) glasses
    Kabalci, I.
    Ozen, G.
    Ovecoglu, M. L.
    Sennaroglu, A.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 419 (1-2) : 294 - 298
  • [2] Microstructural characterization and crystallization of (1-x)TeO2-xCdF2 (x=0.10, 0.15, 0.25 mol) glasses
    Tatar, D.
    Ovecoglu, M. L.
    Ozen, G.
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (16) : 3097 - 3106
  • [3] Microstructural characterization of (1-x)TeO2-xPbF2 (x=0.10, and 0.25 mol) glasses
    Ovecoglu, M. L.
    Kabalci, I.
    Ozen, G.
    Oz, B.
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (2-3) : 1801 - 1804
  • [4] Thermal analysis and linear optical properties of (1-x)TeO2-(x)ZnCl2 optical glasses for photonic applications
    Kabalci, Idris
    Korpe, Nese Ozturk
    Polat, Refik
    2015 INTERNATIONAL SYMPOSIUM ON NEXT-GENERATION ELECTRONICS (ISNE), 2015,
  • [5] Microstructural characterization and crystallization kinetics of (1-x)TeO2-0.10CdF2-xPbF2 (x = 0.05, 0.10, and 0.15 mol) glasses
    Demet Tatar
    M. Lutfi Öveçoğlu
    Gonul Özen
    Scott A. Speakman
    Journal of Materials Research, 2009, 24 : 3087 - 3094
  • [6] Microstructural characterization and crystallization kinetics of (1-x)TeO2-0.10CdF2-xPbF2 (x=0.05, 0.10, and 0.15 mol) glasses
    Tatar, Demet
    Ovecoglu, M. Lutfi
    Ozen, Gonul
    Speakman, Scott A.
    JOURNAL OF MATERIALS RESEARCH, 2009, 24 (10) : 3087 - 3094
  • [7] Microstructural characterization and crystallization kinetics of (1-x)TeO2-xK2O(x=0.05, 0.10, 0.15, 0.20 mol) glasses
    Oz, B.
    Ovecoglu, M. L.
    Kabalci, I.
    Ozen, G.
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (10) : 3239 - 3251
  • [8] Shielding properties of (100-x)TeO2-(x)MoO3 glasses
    Sayyed, M. I.
    El-Mallawany, R.
    MATERIALS CHEMISTRY AND PHYSICS, 2017, 201 : 50 - 56
  • [9] PbF2–TeO2 glasses and glass–ceramics: a study of physical and optical properties
    E. F. El Agammy
    H. Doweidar
    K. El-Egili
    R. Ramadan
    Applied Physics A, 2021, 127
  • [10] Mechanisms of nonlinear optical absorption in (GeO2)(1-x)-(PbF2)(x) (0.1=x=0.3) modified germanate glasses
    Unlu, Bekir Asilcan
    Bilir, Gokhan
    Yuksek, Mustafa
    Karatay, Ahmet
    Yildiz, Elif Akhuseyin
    Elmali, Ayhan
    OPTICAL MATERIALS, 2022, 131
12345