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Thermal Properties, Microstructure, and Conductivity of New Glasses Based on the GeSe 2 –Ga 2 Se 3 –AgI System
Author(s) -
Tang Gao,
Liu Cunming,
Luo Lan,
Chen Wei
Publication year - 2008
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02816.x
Subject(s) - materials science , ionic conductivity , glass transition , arrhenius equation , microstructure , analytical chemistry (journal) , activation energy , conductivity , thermal conductivity , spectroscopy , mineralogy , electrolyte , chemistry , composite material , electrode , polymer , chromatography , physics , quantum mechanics
A new class of GeSe 2 –Ga 2 Se 3 –AgI glass systems has been prepared and its glass‐forming region was identified. The maximum dissolvable AgI in glasses was up to 60 mol%. The thermal, optical, and structural properties of glasses were investigated as a function of AgI and Ga 2 Se 3 contents. The GeSe 2 –Ga 2 Se 3 –AgI glasses have a wide region of transmission window (0.6–16 μm) and a high glass transition temperature ( T g ). The conductivities of the samples have been determined by impedance spectroscopy. The maximum ionic conductivity value of around 3.32 × 10 −5 S/cm can be obtained for samples at room temperature. Arrhenius behavior is verified between 30° and 310°C for glasses with activation energies of 0.287 eV. Consequently, these novel glasses may be promising candidate materials for infrared optics and solid electrolyte applications.