Chemical order lifetimes in liquids, and a second fictive temperature for glassformers

Luz Maria Martinez; Charles Angell

doi:10.1016/S0378-4371(02)01052-X

Chemical order lifetimes in liquids, and a second fictive temperature for glassformers

Luz Maria Martinez, Charles Angell

Molecular Sciences, School of (SMS)

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

13 Scopus citations

Abstract

A study was performed on chemical order lifetimes in liquids and a second fictive temperature for glassformers. The character of chemical order fluctuations in viscous liquids and their relation to the density and enthalpy fluctuations, determining the structural relaxation time and the glass transition temperature, were also discussed. It was found that in appropriate systems an increase in concentration of slow chemically ordering units in liquids could produce a crossover to fast ion conducting glass phenomenology.

Original language	English (US)
Pages (from-to)	548-559
Number of pages	12
Journal	Physica A: Statistical Mechanics and its Applications
Volume	314
Issue number	1-4
DOIs	https://doi.org/10.1016/S0378-4371(02)01052-X
State	Published - 2002

Keywords

Chemical order
Concentration-concentration structure factor
Fictive temperature
Liquid landscapes
Relaxation times

ASJC Scopus subject areas

Statistics and Probability
Condensed Matter Physics

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10.1016/S0378-4371(02)01052-X

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title = "Chemical order lifetimes in liquids, and a second fictive temperature for glassformers",

abstract = "A study was performed on chemical order lifetimes in liquids and a second fictive temperature for glassformers. The character of chemical order fluctuations in viscous liquids and their relation to the density and enthalpy fluctuations, determining the structural relaxation time and the glass transition temperature, were also discussed. It was found that in appropriate systems an increase in concentration of slow chemically ordering units in liquids could produce a crossover to fast ion conducting glass phenomenology.",

keywords = "Chemical order, Concentration-concentration structure factor, Fictive temperature, Liquid landscapes, Relaxation times",

author = "Martinez, {Luz Maria} and Charles Angell",

note = "Funding Information: This work was supported by the NSF under Solid State Chemistry grant no. DMR0082535. We acknowledge helpful discussions with Paul A. Madden, and assistance with the experiments from Burkhard Geil and Ranko Richert, see Ref. [24] , and Marcelo Videa. ",

year = "2002",

doi = "10.1016/S0378-4371(02)01052-X",

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T1 - Chemical order lifetimes in liquids, and a second fictive temperature for glassformers

AU - Martinez, Luz Maria

AU - Angell, Charles

N1 - Funding Information: This work was supported by the NSF under Solid State Chemistry grant no. DMR0082535. We acknowledge helpful discussions with Paul A. Madden, and assistance with the experiments from Burkhard Geil and Ranko Richert, see Ref. [24] , and Marcelo Videa.

PY - 2002

Y1 - 2002

N2 - A study was performed on chemical order lifetimes in liquids and a second fictive temperature for glassformers. The character of chemical order fluctuations in viscous liquids and their relation to the density and enthalpy fluctuations, determining the structural relaxation time and the glass transition temperature, were also discussed. It was found that in appropriate systems an increase in concentration of slow chemically ordering units in liquids could produce a crossover to fast ion conducting glass phenomenology.

AB - A study was performed on chemical order lifetimes in liquids and a second fictive temperature for glassformers. The character of chemical order fluctuations in viscous liquids and their relation to the density and enthalpy fluctuations, determining the structural relaxation time and the glass transition temperature, were also discussed. It was found that in appropriate systems an increase in concentration of slow chemically ordering units in liquids could produce a crossover to fast ion conducting glass phenomenology.

KW - Chemical order

KW - Concentration-concentration structure factor

KW - Fictive temperature

KW - Liquid landscapes

KW - Relaxation times

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DO - 10.1016/S0378-4371(02)01052-X

M3 - Article

AN - SCOPUS:0036946572

SN - 0378-4371

VL - 314

SP - 548

EP - 559

JO - Physica A: Statistical Mechanics and its Applications

JF - Physica A: Statistical Mechanics and its Applications

IS - 1-4

ER -

Chemical order lifetimes in liquids, and a second fictive temperature for glassformers

Abstract

Keywords

ASJC Scopus subject areas

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