Structural and impedance studies of copper-enriched (Cu0.75Ag0.25)7SiS5I-based ceramics

I.P. Studenyak, Uzhhorod National University, Faculty of Physics, 3, Narodna Sq., 88000 Uzhhorod, Ukraine, A.I. Pogodin, I.A. Shender, S.M. Bereznyuk, M.J. Filep, O.P. Kokhan, P. Kopcansky, Uzhhorod National University, Faculty of Physics, 3, Narodna Sq., 88000 Uzhhorod, Ukraine, Uzhhorod National University, Faculty of Physics, 3, Narodna Sq., 88000 Uzhhorod, Ukraine, Uzhhorod National University, Faculty of Physics, 3, Narodna Sq., 88000 Uzhhorod, Ukraine, Uzhhorod National University, Faculty of Physics, 3, Narodna Sq., 88000 Uzhhorod, Ukraine (+2 others)
2020 Semiconductor Physics, Quantum Electronics & Optoelectronics  
Copper-enriched (Cu 0.75 Ag 0.25 ) 7 SiS 5 I-based ceramics were prepared from the micro-and nanopowders by pressing and sintering under developed technological conditions. Structural studies at different process step stages of ceramic samples preparation were performed using the XRD technique and microstructural analysis. The frequency and temperature dependences of the total electrical conductivity for (Cu 0.75 Ag 0.25 ) 7 SiS 5 I-based ceramics were investigated by the impedance
more » ... edance measurements. From the Nyquist plots, by using the electrode equivalent circuits the ionic and electronic components of the total electrical conductivity were determined. It has been shown that both ionic and electronic conductivity nonlinearly depend on the average crystallites size of (Cu 0.75 Ag 0.25 ) 7 SiS 5 I-based ceramics.
doi:10.15407/spqeo23.03.260 fatcat:ybyoztws2fgklaesigf5vwbh5a