Thermal, Electrical and Optical Studies of Phase Transitions in Ag2CdI4 Solid Electrolyte

The article deals with the preparation method of bulk Ag 2 CdI 4 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 d...

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Bibliographic Details
Published in:Radiation effects and defects in solids 2003-01, Vol.158 (1-6), p.157-161
Main Authors: Bolesta, I. M., Karbovnyk, I. D., Velgosh, S. R., Futey, O. V
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Conductivity
Crystalline state (including molecular motions in solids)
Crystallographic aspects of phase transformations
pressure effects
Exact sciences and technology
Luminescence
Phase transition
Physics
Structure of solids and liquids
crystallography
Superionic compound
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Summary:The article deals with the preparation method of bulk Ag 2 CdI 4 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 Ag 2 CdI 4 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.
ISSN:1042-0150
1029-4953
DOI:10.1080/1042015021000052647