Two-step relaxation decay in a strong glass former

D. Sidebottom; R. Bergman; L. Börjesson; L. M. Torell

doi:10.1103/PhysRevLett.71.2260

Two-step relaxation decay in a strong glass former

D. Sidebottom, R. Bergman, L. Börjesson, L. M. Torell

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

The dynamics around the liquid-glass transition in B2O3 have been investigated by photon correlation spectroscopy. A two-step relaxation is for the first time observed in a ''strong'' network forming glass. The behavior is similar to the fast β and slower α relaxations observed for ''fragile'' glasses and proposed in mode coupling theory (MCT) for simple glass forming systems. We find that the time decays of the two processes obey power laws consistent with MCT. It seems that a two-step relaxation is a more general relaxation pattern than has been discussed so far.

Original language	English (US)
Pages (from-to)	2260-2263
Number of pages	4
Journal	Physical Review Letters
Volume	71
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.71.2260
State	Published - Jan 1 1993
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.71.2260

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AB - The dynamics around the liquid-glass transition in B2O3 have been investigated by photon correlation spectroscopy. A two-step relaxation is for the first time observed in a ''strong'' network forming glass. The behavior is similar to the fast β and slower α relaxations observed for ''fragile'' glasses and proposed in mode coupling theory (MCT) for simple glass forming systems. We find that the time decays of the two processes obey power laws consistent with MCT. It seems that a two-step relaxation is a more general relaxation pattern than has been discussed so far.

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