Dynamic structural transition in the superionic conductor Na5RESi4O12
Kompan M. E., Venus G. B., Dimitrova O. V.
Experiments have been carried out on Eu3 + probe ions in the superionic conductor Na5RESi4012 near 400 К by the method of fluorescence spectroscopy. It is concluded from the results and from a comparison of these results with existing structural data that a restructuring of the material which occurs near 400 К is a "dynamic structural transition" of an intermediate type—something between first-order and second-order in Landau's classification of phase transitions.
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![](/ps/1268/article_19184_800_head.png "Experiments have been carried out on Eu<sup>3</sup> <sup>+</sup> probe ions in the superionic conductor Na<sub>5</sub>RESi<sub>4</sub>0<sub>12</sub> near 400 К by the method of fluorescence spectroscopy. It is concluded from the results and from a comparison of these results with existing structural data that a restructuring of the material which occurs near 400 К is a "dynamic structural transition" of an intermediate type—something between first-order and second-order in Landau's classification of phase transitions.")