Origin of dispersion in dipolar relaxations of glasses

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Dispersive relaxations typically found in glassy systems stem from a distribution of response times, spread either heterogeneously of homogeneously within the ensemble of sites. To distinguish between these two possibilities we follow the dynamics of dipole solvation, a technique which provides valuable insight on relaxation in both the liquid and the glassy regime. Employing the dynamic mean spherical approximation (MSA) thory, with ε{lunate}(ω) as an input, we calculate the solvation time evolution in the homogeneous and the heterogeneous limits. Due to the remarkable agreement between the homogeneous MSA and the observed solvation in 2-methyltetrahydrofuran at TG + 3 K=94 K we conclude on the homogeneous nature of dispersion of dipolar relaxations.

Original languageEnglish (US)
Pages (from-to)223-227
Number of pages5
JournalChemical Physics Letters
Volume216
Issue number1-2
DOIs
StatePublished - Dec 24 1993
Externally publishedYes

Fingerprint

Solvation
solvation
Glass
glass
approximation
stems
dipoles
Liquids
liquids

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Origin of dispersion in dipolar relaxations of glasses. / Richert, Ranko.

In: Chemical Physics Letters, Vol. 216, No. 1-2, 24.12.1993, p. 223-227.

Research output: Contribution to journalArticle

@article{9720d8c586534fe0a51a4a9948a4b313,
title = "Origin of dispersion in dipolar relaxations of glasses",
abstract = "Dispersive relaxations typically found in glassy systems stem from a distribution of response times, spread either heterogeneously of homogeneously within the ensemble of sites. To distinguish between these two possibilities we follow the dynamics of dipole solvation, a technique which provides valuable insight on relaxation in both the liquid and the glassy regime. Employing the dynamic mean spherical approximation (MSA) thory, with ε{lunate}(ω) as an input, we calculate the solvation time evolution in the homogeneous and the heterogeneous limits. Due to the remarkable agreement between the homogeneous MSA and the observed solvation in 2-methyltetrahydrofuran at TG + 3 K=94 K we conclude on the homogeneous nature of dispersion of dipolar relaxations.",
author = "Ranko Richert",
year = "1993",
month = "12",
day = "24",
doi = "10.1016/0009-2614(93)E1251-B",
language = "English (US)",
volume = "216",
pages = "223--227",
journal = "Chemical Physics Letters",
issn = "0009-2614",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Origin of dispersion in dipolar relaxations of glasses

AU - Richert, Ranko

PY - 1993/12/24

Y1 - 1993/12/24

N2 - Dispersive relaxations typically found in glassy systems stem from a distribution of response times, spread either heterogeneously of homogeneously within the ensemble of sites. To distinguish between these two possibilities we follow the dynamics of dipole solvation, a technique which provides valuable insight on relaxation in both the liquid and the glassy regime. Employing the dynamic mean spherical approximation (MSA) thory, with ε{lunate}(ω) as an input, we calculate the solvation time evolution in the homogeneous and the heterogeneous limits. Due to the remarkable agreement between the homogeneous MSA and the observed solvation in 2-methyltetrahydrofuran at TG + 3 K=94 K we conclude on the homogeneous nature of dispersion of dipolar relaxations.

AB - Dispersive relaxations typically found in glassy systems stem from a distribution of response times, spread either heterogeneously of homogeneously within the ensemble of sites. To distinguish between these two possibilities we follow the dynamics of dipole solvation, a technique which provides valuable insight on relaxation in both the liquid and the glassy regime. Employing the dynamic mean spherical approximation (MSA) thory, with ε{lunate}(ω) as an input, we calculate the solvation time evolution in the homogeneous and the heterogeneous limits. Due to the remarkable agreement between the homogeneous MSA and the observed solvation in 2-methyltetrahydrofuran at TG + 3 K=94 K we conclude on the homogeneous nature of dispersion of dipolar relaxations.

UR - http://www.scopus.com/inward/record.url?scp=0000082081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000082081&partnerID=8YFLogxK

U2 - 10.1016/0009-2614(93)E1251-B

DO - 10.1016/0009-2614(93)E1251-B

M3 - Article

VL - 216

SP - 223

EP - 227

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 1-2

ER -