Low-temperature anomalies in strong and fragile glass formers

A. P. Sokolov; R. Calemczuk; B. Salce; A. Kisliuk; D. Quitmann; E. Duval

doi:10.1103/PhysRevLett.78.2405

Low-temperature anomalies in strong and fragile glass formers

A. P. Sokolov, R. Calemczuk, B. Salce, A. Kisliuk, D. Quitmann, E. Duval

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

149 Scopus citations

Abstract

The low-temperature anomalies of glass forming systems are analyzed focusing on the concept of fragility. It is shown that two extremes on the fragility plot, SiO₂ and Ca_0.4K_0.6(NO₃)_1.4, show a strong difference in specific heat in the range of excess vibrational contribution. This difference cannot be explained in the framework of the soft potential model in its present state. A relation between the excess vibrational contribution and the amount of structural fluctuations is suggested. It is shown that the suggested relation explains the found difference in low-temperature specific heat between strong and fragile glass formers.

Original language	English
Pages (from-to)	2405-2408
Number of pages	4
Journal	Physical Review Letters
Volume	78
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.78.2405
State	Published - Mar 24 1997
Externally published	Yes

Access to Document

10.1103/PhysRevLett.78.2405

Cite this

@article{0f5b9987dca84b55a49189b50ea482c0,

title = "Low-temperature anomalies in strong and fragile glass formers",

abstract = "The low-temperature anomalies of glass forming systems are analyzed focusing on the concept of fragility. It is shown that two extremes on the fragility plot, SiO2 and Ca0.4K0.6(NO3)1.4, show a strong difference in specific heat in the range of excess vibrational contribution. This difference cannot be explained in the framework of the soft potential model in its present state. A relation between the excess vibrational contribution and the amount of structural fluctuations is suggested. It is shown that the suggested relation explains the found difference in low-temperature specific heat between strong and fragile glass formers.",

author = "Sokolov, {A. P.} and R. Calemczuk and B. Salce and A. Kisliuk and D. Quitmann and E. Duval",

year = "1997",

month = mar,

day = "24",

doi = "10.1103/PhysRevLett.78.2405",

language = "English",

volume = "78",

pages = "2405--2408",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "12",

}

TY - JOUR

T1 - Low-temperature anomalies in strong and fragile glass formers

AU - Sokolov, A. P.

AU - Calemczuk, R.

AU - Salce, B.

AU - Kisliuk, A.

AU - Quitmann, D.

AU - Duval, E.

PY - 1997/3/24

Y1 - 1997/3/24

N2 - The low-temperature anomalies of glass forming systems are analyzed focusing on the concept of fragility. It is shown that two extremes on the fragility plot, SiO2 and Ca0.4K0.6(NO3)1.4, show a strong difference in specific heat in the range of excess vibrational contribution. This difference cannot be explained in the framework of the soft potential model in its present state. A relation between the excess vibrational contribution and the amount of structural fluctuations is suggested. It is shown that the suggested relation explains the found difference in low-temperature specific heat between strong and fragile glass formers.

AB - The low-temperature anomalies of glass forming systems are analyzed focusing on the concept of fragility. It is shown that two extremes on the fragility plot, SiO2 and Ca0.4K0.6(NO3)1.4, show a strong difference in specific heat in the range of excess vibrational contribution. This difference cannot be explained in the framework of the soft potential model in its present state. A relation between the excess vibrational contribution and the amount of structural fluctuations is suggested. It is shown that the suggested relation explains the found difference in low-temperature specific heat between strong and fragile glass formers.

UR - http://www.scopus.com/inward/record.url?scp=1642532616&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.78.2405

DO - 10.1103/PhysRevLett.78.2405

M3 - Article

AN - SCOPUS:1642532616

SN - 0031-9007

VL - 78

SP - 2405

EP - 2408

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

ER -

Low-temperature anomalies in strong and fragile glass formers

Abstract

Access to Document

Other files and links

Fingerprint

Cite this