Effect of Composition on Character of Defect Formation
and Ion Transport in (1 – x)[Ca1 – y$Yb_{y}^{{2 + }}$]$Yb_{2}^{{3 + }}$S4 – δ–xYb2S3 Phases1
B. A. Ananchenkoa, *, A. O. Myakisheva, L. A. Kalininaa, E. V. Koshelevaa, and I. V. Murinb
Translated by M. Ehrenburg
aVyatka State University, Institute of Chemistry and Ecology, Kirov, 610000 Russia
bSt. Petersburg State University, Institute of Chemistry, St. Petersburg, Russia
Correspondence to: *e-mail: lab230@rambler.ru
1Published on the basis of a report delivered at the 13th International Meeting “Fundamental Problems of Solid State Ionics,” Chernogolovka, 2016.
Received 31 July, 2016
Abstract—Structural features of solid solutions based on CaYb2S4 (the Yb3S4 structural type) are studied using the methods of Rietveld full-profile analysis, measurement of pycnometric density, and thermal analysis in vacuum with simultaneous study of variation of the elementary cell parameters. Conductivity of samples with different doping additive content are studied in the medium of argon and in the hydrogen sulfide-containing medium using the impedance technique. Different mechanisms of defect formation are analyzed as dependent on the doping degree.
Keywords: sulfide-conducting electrolytes, Rietveld full-profile analysis, impedance spectroscopy, defect formation
DOI: 10.1134/S102319351708002X