Physics

Phase formation processes in the system К${}_2$О–Sb${}_2$O${}_3$–MoO${}_3$ on heating

Yu. A. Lupitskaya^a, M. V. Klyueva^b, D. A. Kalganov<sup>a

a</sup> Chelyabinsk State University, Chelyabinsk, Russia
^b National University of Science and Technology «MISIS»

Abstract: We report on the phase formation processes in compounds based on complex antimony oxides on heating in air. For the synthesis temperature 1173 K, a single-phase region of compounds of potassium antimonate-molybdate with a pyrochlore-type structure was determined. Within the framework of the space group $Fd\rm-3m$, the Rietveld method was used to refine the structural parameters of the obtained pyrochlore phases and establish the relationship between structural defects and their ion-conducting properties.

Keywords: phase formation, complex antimony oxides, pyrochlore type structure, potassium antimonate-molybdate compounds, Rietveld method, ion-conducting properties.

Received: 09.10.2017
Revised: 18.10.2017

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