BRILLOUIN-SCATTERING IN SALOL - DETERMINING T(C) OF THE MODE-COUPLING THEORY

被引：67

作者：

DREYFUS, C

LEBON, MJ

CUMMINS, HZ

TOULOUSE, J

BONELLO, B

PICK, RM

机构：

[1] CUNY CITY COLL, NEW YORK, NY 10031 USA

[2] LEHIGH UNIV, DEPT PHYS, BETHLEHEM, PA 18015 USA

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.69.3666

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Brillouin scattering spectra of the molecular glass former salol were combined with ultrasonic measurements to evaluate the nonergodicity parameter of mode coupling theory f0(T). It was found to exhibit a weak cusp at a temperature T(c)B=275 +/- 10 K, in reasonable agreement with the mode-coupling crossover temperature T(c)=256 +/- 5 K found recently by other methods. This result is in marked contrast to the recent publication of Elmroth, Borjesson, and Torell [Phys. Rev. Lett. 68, 79 (1992)].

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页码：3666 / 3669

页数：4

相关论文

共 31 条

[1] PERSPECTIVE ON THE GLASS-TRANSITION [J].

ANGELL, CA .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1988, 49 (08) :863-871

[2] RELAXATION IN LIQUIDS, POLYMERS AND PLASTIC CRYSTALS - STRONG FRAGILE PATTERNS AND PROBLEMS [J].

ANGELL, CA .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1991, 131 :13-31

[3] DYNAMICS OF SUPERCOOLED LIQUIDS AND THE GLASS-TRANSITION [J].

BENGTZELIUS, U ;

GOTZE, W ;

SJOLANDER, A .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (33) :5915-5934

[4] NEUTRON AND LIGHT-SCATTERING STUDY OF RELAXATION DYNAMICS IN A GLASS-FORMING FRAGILE MOLECULAR LIQUID [J].

BORJESSON, L ;

ELMROTH, M ;

TORELL, LM .

CHEMICAL PHYSICS, 1990, 149 (1-2) :209-220

[5] SPECIFIC-HEAT SPECTROSCOPY AND DIELECTRIC SUSCEPTIBILITY MEASUREMENTS OF SALOL AT THE GLASS-TRANSITION [J].

DIXON, PK .

PHYSICAL REVIEW B, 1990, 42 (13) :8179-8186

[6]

DU WM, 1992, B AM PHYS SOC, V37, P72

[7] OBSERVATION OF A DYNAMIC ANOMALY IN THE LIQUID-GLASS TRANSFORMATION RANGE BY BRILLOUIN-SCATTERING [J].

ELMROTH, M ;

BORJESSON, L ;

TORELL, LM .

PHYSICAL REVIEW LETTERS, 1992, 68 (01) :79-82

[8] LIGHT-SCATTERING FROM SHEAR MODES IN LIQUID SALOL [J].

ENRIGHT, GD ;

STOICHEFF, BP .

JOURNAL OF CHEMICAL PHYSICS, 1976, 64 (09) :3658-3665

[9] TEMPERATURE-DEPENDENCE OF THE NONERGODICITY PARAMETER IN POLYBUTADIENE IN THE NEIGHBORHOOD OF THE GLASS-TRANSITION [J].

FRICK, B ;

FARAGO, B ;

RICHTER, D .

PHYSICAL REVIEW LETTERS, 1990, 64 (24) :2921-2924

[10] SOME COMMENTS ON THE ALPHA-RELAXATION DYNAMICS OF SUPERCOOLED CAKNO3 [J].

FUCHS, M ;

GOTZE, W ;

LATZ, A .

CHEMICAL PHYSICS, 1990, 149 (1-2) :185-196

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