Thermal,Electrical and Optical Studies of Phase Transitions in Ag2CdI4 Solid Electrolyte |
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| Authors: | I. M. Bolesta I. D. Karbovnyk S. R. Velgosh O. V Futey |
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| Affiliation: | 1. Physical Faculty, Department of Radiophysics, Lviv Ivan Franko National University, Dragomanova str., 50, UA 79005, Lviv, Ukrainebolesta@wups.lviv.ua;3. Physical Faculty, Department of Radiophysics, Lviv Ivan Franko National University, Dragomanova str., 50, UA 79005, Lviv, Ukraine |
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| Abstract: | ![]()
The article deals with the preparation method of bulk Ag2CdI4 superionic material and with investigations of structural phase transitions (PT) which take place in the 100÷450 K temperature range. The phase transitions were studied by thermal, electrical and luminescence methods. The temperature dependencies of thermal expansion, heat capacity, thermal conductivity, electric conductivity and excitation luminescence spectra show that in the temperature range 100 ÷ 450 K Ag2CdI4 possesses a sequence of structural changes at 180 ÷190 K, 320 ÷ 330 K, 350 ÷ 370 K and at T>400K. The nature and mechanisms of the observed structural changes are discussed. |
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| Keywords: | Superionic compound Phase transition Conductivity Luminescence |
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