TY - JOUR
T1 - Low-temperature excess specific heat in oxide glasses
T2 - Comprehensive study of thermometrically observed boson peak
AU - Nakamura, Kensaku
AU - Takahashi, Yoshihiro
AU - Fujiwara, Takumi
N1 - Publisher Copyright:
Copyright © 2014 The Physical Society of Japan.
PY - 2014/11/15
Y1 - 2014/11/15
N2 - 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.
AB - 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.
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U2 - 10.7566/JPSJ.83.114603
DO - 10.7566/JPSJ.83.114603
M3 - Article
AN - SCOPUS:84925002952
SN - 0031-9015
VL - 83
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 11
M1 - 114603
ER -