AMPC  Vol.2 No.4 , December 2012
Ion Mobility in the Fluorite Solid Solutions 50PbF2–30BiF3–20K(Na)F According to 19F, 23Na NMR Data
ABSTRACT
 Ion mobility in solid solutions of the fluorite structure 50Pb2–30BiF3–20KF (I) and 50Pb2–30BiF3–20NaF (II) was studied by NMR method. Analysis of 19F, 23Na NMR spectra made it possible to reveal the character of ion motions in the fluoride and sodium sublattices with temperature variation, to determine the types and temperature ranges in which they took place. It was found that the dominant form of ionic mobility in the samples I and II above 380 K was the diffusion of fluoride and sodium ions. According to preliminary results of electro-physical studies, the conductivity reached values of ~ 2×10–2 – 10–3 S/cm above 500 K. The solid solutions I and II can be recommended as a basis for use in the development of new functional materials.

Cite this paper
V. Kavun, A. Slobodyuk, I. Telin, R. Yaroshenko, I. Maslennikova, V. Goncharuk and V. Kharchenko, "Ion Mobility in the Fluorite Solid Solutions 50PbF2–30BiF3–20K(Na)F According to 19F, 23Na NMR Data," Advances in Materials Physics and Chemistry, Vol. 2 No. 4, 2012, pp. 71-73. doi: 10.4236/ampc.2012.24B020.
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