Structural and vibrational relaxations during aging of an ultralow-expansion glass

Hiroshi Kobayashi, Yurie Ohtake, Shu Hirata and Atsuo Morinaga

Physica A: Statistical Mechanics and its Applications, 2016, vol. 449, issue C, 35-42

Abstract: We accurately measured the aging of an ultralow-expansion (ULE) glass for 1250 days using a diode laser resonated in the glass cavity at −3.3 °C, where the glass has zero thermal expansion coefficient. We observed that the glass shows exponential and linear decreases in length ΔL(d)/L(0)=A0[exp(−d/τ0)−1]−K0×d, where d is the day, τ0 is the relaxation time, and A0 and K0 are constants. Equation shows the structural relaxation with a spontaneous linear contraction after the termination of a classical exponential contraction. It was observed that the rate of linear contraction K0 becomes slightly smaller after an extremely long aging time. These results indicate that after prolonged aging, the length of the glass spontaneously decreases at a constant rate with respect to time, and that its linear contraction becomes weaker due to glass densification.

Keywords: Glass aging; Glass entropy; Vibrational relaxation; Structural relaxation; Irreversible process; Dissipative structure (search for similar items in EconPapers)
Date: 2016
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437115011450
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:449:y:2016:i:c:p:35-42

DOI: 10.1016/j.physa.2015.12.108

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().