Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 85: Issue 3
Non-debye nature in thermal relaxation and thermal properties of lithium borate glasses studied by modulated DSC
Authors:
Y. Matsuda University of Tsukuba Graduate School of Pure and Applied Sciences Ibaraki Japan 305-8571 Tsukuba Ibaraki Japan 305-8571 Tsukuba

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C. Matsui University of Tsukuba College of Engineering Sciences Ibaraki Japan 305-8573 Tsukuba Ibaraki Japan 305-8573 Tsukuba

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Y. Ike University of Tsukuba Graduate School of Pure and Applied Sciences Ibaraki Japan 305-8571 Tsukuba Ibaraki Japan 305-8571 Tsukuba

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M. Kodama Sojo University Department of Applied Chemistry Kumamoto Japan 860-0082 Kumamoto Japan 860-0082

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S. Kojima University of Tsukuba Graduate School of Pure and Applied Sciences Ibaraki Japan 305-8571 Tsukuba Ibaraki Japan 305-8571 Tsukuba

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Pages:
725–730
Online Publication Date:
15 Sep 2006
Publication Date:
01 Sep 2006
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-006-7652-9
Keywords:
complex heat capacity; lithium borate glass; modulated DSC; non-Debye; relaxation; TMDSC
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Abstract  

Complex heat capacity, Cp*=Cp'–iCp'', of lithium borate glasses xLi2O(1–x)B2O3 (molar fraction x=0.00–0.30) has been investigated by Modulated DSC. We have analyzed the shape of Cp* by the Cole-Cole plot, performed fitting by the Havriliak-Negami equation, and then determined the parameters related to the non-Debye nature of thermal relaxation. Moreover, the concentration dependence of the thermal properties has been investigated. Glass transition temperatures become higher with the increase of molar fraction of Li2O and shows the board peak around x=0.26. Temperature ranges of glass transitions become narrower with the increase of Li2O concentration.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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