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Title: Complex Heat Capacity of Lithium Borate Glasses Studied by Modulated DSC

Abstract

Complex heat capacity, C{sub p}* = C{sub p}' - iC{sub p}'', of lithium borate glasses Li2O{center_dot}(1-x)B2O3 (x = 0.00 - 0.33) has been investigated by Modulated DSC (MDSC). We have successfully observed the frequency dependent C{sub p}* by MDSC in the frequency range 0.01 to 0.1 Hz, and the average relaxation time of glass transition has been determined as a function of temperature. Moreover, the composition dependence of the thermal properties has been investigated. The calorimetric glass transition temperatures become higher with the increase of concentration of Li2O and show the board maximum around x = 0.26-0.28. The width of glass transition region becomes narrower as Li2O increases. These results relate to the change of the fragility of the system. It has been proven that the complex heat capacity spectroscopy by MDSC is a powerful tool to investigate the glass transition phenomena.

Authors:
;  [1];  [2];  [3];  [1]
  1. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8571 (Japan)
  2. College of Engineering Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573 (Japan)
  3. Department of Applied Chemistry, Sojo University, Kumamoto, 860-0082 (Japan)
Publication Date:
OSTI Identifier:
20798660
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 832; Journal Issue: 1; Conference: 2. international conference on flow dynamics, Sendai (Japan), 16-18 Nov 2005; Other Information: DOI: 10.1063/1.2204479; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BORATES; CALORIMETRY; FREQUENCY DEPENDENCE; GLASS; LITHIUM COMPOUNDS; RELAXATION TIME; SPECIFIC HEAT; SPECTROSCOPY; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE

Citation Formats

Matsuda, Yu, Ike, Yuji, Matsui, Chihiro, Kodama, Masao, Kojima, Seiji, and College of Engineering Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573. Complex Heat Capacity of Lithium Borate Glasses Studied by Modulated DSC. United States: N. p., 2006. Web. doi:10.1063/1.2204479.
Matsuda, Yu, Ike, Yuji, Matsui, Chihiro, Kodama, Masao, Kojima, Seiji, & College of Engineering Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573. Complex Heat Capacity of Lithium Borate Glasses Studied by Modulated DSC. United States. https://doi.org/10.1063/1.2204479
Matsuda, Yu, Ike, Yuji, Matsui, Chihiro, Kodama, Masao, Kojima, Seiji, and College of Engineering Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573. 2006. "Complex Heat Capacity of Lithium Borate Glasses Studied by Modulated DSC". United States. https://doi.org/10.1063/1.2204479.
@article{osti_20798660,
title = {Complex Heat Capacity of Lithium Borate Glasses Studied by Modulated DSC},
author = {Matsuda, Yu and Ike, Yuji and Matsui, Chihiro and Kodama, Masao and Kojima, Seiji and College of Engineering Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573},
abstractNote = {Complex heat capacity, C{sub p}* = C{sub p}' - iC{sub p}'', of lithium borate glasses Li2O{center_dot}(1-x)B2O3 (x = 0.00 - 0.33) has been investigated by Modulated DSC (MDSC). We have successfully observed the frequency dependent C{sub p}* by MDSC in the frequency range 0.01 to 0.1 Hz, and the average relaxation time of glass transition has been determined as a function of temperature. Moreover, the composition dependence of the thermal properties has been investigated. The calorimetric glass transition temperatures become higher with the increase of concentration of Li2O and show the board maximum around x = 0.26-0.28. The width of glass transition region becomes narrower as Li2O increases. These results relate to the change of the fragility of the system. It has been proven that the complex heat capacity spectroscopy by MDSC is a powerful tool to investigate the glass transition phenomena.},
doi = {10.1063/1.2204479},
url = {https://www.osti.gov/biblio/20798660}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 832,
place = {United States},
year = {Fri May 05 00:00:00 EDT 2006},
month = {Fri May 05 00:00:00 EDT 2006}
}