THERMAL-PROPERTIES OF SMOKY QUARTZ AT VERY LOW-TEMPERATURES

被引：15

作者：

CHAUSSY, J ^{[1
]}

GILCHRIST, JLG ^{[1
]}

LASJAUNIAS, JC ^{[1
]}

SAINTPAUL, M ^{[1
]}

机构：

[1] INST VENEZOLANO INVEST CIENT,CTR FIS,CARACAS 101,VENEZUELA

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1979年 / 40卷 / 12期

关键词：

D O I：

10.1016/0022-3697(79)90141-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The existence of a distribution of low-lying energy levels associated with holes trapped at substitutional aluminium impurities is confirmed by measurements of low temperature specific heat and dielectric loss. A large linearly temperature-dependent contribution to the specific heat is observed at temperatures below 1 K, down to 30 mK. A localization temperature describing the width of the distribution of the energy levels is estimated to vary between 3 and 6 K. We determined the thermal conductivity down to 30 mK and attribute the decrease below the boundary-scattering value to irradiation damage generally, arguing that it is not attributable to resonant scattering. © 1979.

引用

页码：1073 / 1078

页数：6

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