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Superionic behavior in the xAgI-(1-x)CsAg2I3 polycrystalline system

AutorRodríguez, L. A.; Zapata, James ; Vargas, R. A.; Peña, D.; Diosa, J. E.
Palabras clavePhase transitions
Crystal structure
Differential scanning calorimetry (DSC)
Ionic conductivity
X-ray diffraction
Fecha de publicación2016
EditorElsevier
CitaciónJournal of Physics and Chemistry of Solids 93: 126-130 (2016)
ResumenA superionic phase behavior (with DC ionic conductivities higher than 0.01 S/cm) has been observed in xAgI-(1-x)CsAgI (x≈0.67) polycrystalline system grown by slow evaporation using AgI and CsI powders (molar ratio Cs/Ag=0.25) as starting salts and an aqueous solution of HI as solvent. The transition from the normal-to- the superionic state is first-order with a hysteretic behavior in temperature centered at about 116 °C as reflected by thermal (DSC) and electrical conductivity measurements. This mixture is composed of CsAgI and AgI crystalline phases and an additional amorphous AgI phase that explains the glassy-type behavior observed in the superionic phase transition.
URIhttp://hdl.handle.net/10261/159931
Identificadoresdoi: 10.1016/j.jpcs.2016.02.018
issn: 0022-3697
Aparece en las colecciones: (CIN2) Artículos
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