SELF-SIMILAR LIGHT-SCATTERING SPECTRA OF BETA RELAXATION NEAR THE LIQUID-GLASS TRANSITION

被引：79

作者：

TAO, NJ ^{[1
]}

LI, G ^{[1
]}

CUMMINS, HZ ^{[1
]}

机构：

[1] CUNY CITY COLL,DEPT PHYS,NEW YORK,NY 10031

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.66.1334

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a light-scattering observation of beta-relaxation in [Ca(NO3)2]0.4-(KNO3)0.6 in the vicinity of the liquid-glass transition. The spectra exhibit self-similarity with I(omega) = A/omega-1-a over a spectral range of nearly 3 orders of magnitude in both the liquid and glass phases. This result agrees with predictions of mode-coupling theories of the glass transition. However, the value of alpha is strongly temperature dependent, a result not predicted by the theory. The spectra are strongly depolarized with a depolarization ratio of approximately 0.75.

引用

收藏

页码：1334 / 1337

页数：4

相关论文

共 33 条

[1] SPECTROSCOPY SIMULATION AND SCATTERING, AND THE MEDIUM RANGE ORDER PROBLEM IN GLASS [J].

ANGELL, CA .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1985, 73 (1-3) :1-17

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

ANGELL, CA .

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

[3] THE LIQUID GLASS-TRANSITION OF THE HARD-SPHERE SYSTEM [J].

BARRAT, JL ;

GOTZE, W ;

LATZ, A .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (39) :7163-7170

[4] 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

[5] DYNAMICS OF A LENNARD-JONES SYSTEM CLOSE TO THE GLASS-TRANSITION [J].

BENGTZELIUS, U .

PHYSICAL REVIEW A, 1986, 34 (06) :5059-5069

[6] RAYLEIGH SCATTERING - COLLISIONAL MOTIONS IN LIQUIDS [J].

BUCARO, JA ;

LITOVITZ, TA .

JOURNAL OF CHEMICAL PHYSICS, 1971, 54 (09) :3846-&

[7] ULTRASONIC AND HYPERSONIC PROPERTIES OF MOLTEN KNO3-CA(NO3)2 MIXTURE [J].

CHENG, LT ;

YAN, YX ;

NELSON, KA .

JOURNAL OF CHEMICAL PHYSICS, 1989, 91 (10) :6052-6061

[8] HYDRODYNAMIC THEORY OF THE GLASS-TRANSITION [J].

DAS, SP ;

MAZENKO, GF ;

RAMASWAMY, S ;

TONER, JJ .

PHYSICAL REVIEW LETTERS, 1985, 54 (02) :118-121

[9] RAMAN-SPECTRA OF WATER IN THE TRANSLATIONAL AND LIBRATIONAL REGIONS .1. STUDY OF THE DEPOLARIZATION RATIO [J].

DESANTIS, A ;

FRATTINI, R ;

SAMPOLI, M ;

MAZZACURATI, V ;

NARDONE, M ;

RICCI, MA ;

RUOCCO, G .

MOLECULAR PHYSICS, 1987, 61 (05) :1199-1212

[10] 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

← 1 2 3 4 →