Abstract
The paper presents results of internal mobility investigations of Na+ and Nd3+ cations in molten binary system NaClNdCl3 at 1023, 1073 and 1123 K. Results of investigations have been compared with literature data for KClNdCl3 system. It has been found that internal mobility of Na+ ions increases with temperature and is higher than mobility of its K+ analogues. It has also been found that for NaClNdCl3 system internal mobility of Nd3+ does not depend on the melt composition in the range of NdCl3 equivalent fractions 0.50 < yNd <-1, whereas for KClNdCl3 system this independence begins at NdCl3 equivalent fraction of 0.80. Moreover, internal mobility of Nd3+ seems almost independent of temperature.
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