STUDY OF LOW-FREQUENCY EXCITATIONS IN DISORDERED SOLIDS BY NUCLEAR-MAGNETIC-RESONANCE AND ELECTRICAL-CONDUCTIVITY

被引：24

作者：

KANERT, O

KUCHLER, R

DIECKHOFER, J

LU, X

JAIN, H

NGAI, KL

机构：

[1] LEHIGH UNIV,DEPT MAT SCI & ENGN,BETHLEHEM,PA 18015

[2] USN,RES LAB,WASHINGTON,DC 20375

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1994年 / 172卷 / pt 2期

关键词：

D O I：

10.1016/0022-3093(94)90653-X

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：

Nuclear spin relaxation (NSR) and electrical conductivity observed in various inorganic oxide glasses at low temperatures are found to be related by the fluctuation-dissipation theorem indicating a common physical origin of the relaxation mechanism due to fluctuating charges which belong to structural low-energy configurations intrinsic to the glassy state. However, in heavy metal fluoride glasses, NSR is shown to detect additional fluctuations which are not observed by conductivity experiments. The underlying relaxation process is caused by magnetic fluctuations without any accompanying charge motions.

引用

页码：1277 / 1284

页数：8

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