Dielectric and far-infrared spectroscopy of glycerol

被引：135

作者：

Schneider, U ^{[1
]}

Lunkenheimer, P ^{[1
]}

Brand, R ^{[1
]}

Loidl, A ^{[1
]}

机构：

[1] Univ Augsburg, D-86135 Augsburg, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 235卷

关键词：

D O I：

10.1016/S0022-3093(98)00561-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Broadband dielectric spectroscopy has been performed on supercooled glycerol for temperatures between 184 and 413 K. The measurements cover 18 decades of frequency and extend into the far infrared regime. The timescale of the alpha-process is observed over 14 decades of frequency as a function of temperature. In the THz range an additional loss peak was observed which is identified as the boson peak known from neutron and light scattering experiments. Between the a and boson peak the loss minimum has been observed as a function of temperature down to the glass temperature. It is very broad and cannot be ascribed to a simple superposition of ct and boson peak. The data are compared to the susceptibilities obtained from neutron and light scattering. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：173 / 179

页数：7

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