Abstract
The influence of the Schottky low-energy excitations related to the presence of rare-earth metals on the thermodynamic and kinetic characteristics of a number of rare-earth pentaphosphate single crystals and the related glasses is analyzed. The temperature dependences of the heat capacity are found to be related to the nanosized structure of the amorphous state of the material.
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ACKNOWLEDGMENTS
We thank L.I. Trakhtenberg for helpful discussions, O.V. Karban’ for the presentation of the results of AFM studies of silicate glasses, and V.I. Pustovoit for his assistance in the sample preparation.
Funding
This work was performed in terms of state assignment in 2019 and was supported in part by the Russian Foundation for Basic Research, project no. 18-07-00191.
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Translated by K. Shakhlevich
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Lezova, I.E., Salamatov, E.I., Taranov, A.V. et al. Low-Temperature Heat Capacity and Phonon Kinetics in Some Rare-Earth Pentaphosphate Single Crystals and Glasses. J. Exp. Theor. Phys. 129, 849–854 (2019). https://doi.org/10.1134/S1063776119090048
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DOI: https://doi.org/10.1134/S1063776119090048