Low-temperature excess specific heat in oxide glasses: Comprehensive study of thermometrically observed boson peak

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Abstract

We present the results of low-temperature (∼5 to 20K) specific-heat measurements performed in numerous oxide glass systems. These results allow us to elucidate the impact of the system or component on the excess specific heat, which when plotted on Cp/T3 vs T appears as a broad band known as the boson peak (BP). By integrating our experimental results with the data of Richet [Physica B 404, 3799 (2009); J. Chem. Phys. 136, 034703 (2012)], we demonstrate a strong negative correlation between the BP amplitude and its maximum temperature. We also describe the BP characteristics of multicomponent systems based on different binary systems in silicate glasses.

Original languageEnglish
Article number114603
Journaljournal of the physical society of japan
Volume83
Issue number11
DOIs
Publication statusPublished - 2014 Nov 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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