LOWER LIMIT TO THE THERMAL-CONDUCTIVITY OF DISORDERED CRYSTALS

被引：2140

作者：

CAHILL, DG ^{[1
]}

WATSON, SK ^{[1
]}

POHL, RO ^{[1
]}

机构：

[1] CORNELL UNIV,ATOM & SOLID STATE PHYS LAB,ITHACA,NY 14853

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.46.6131

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the thermal conductivity above 30 K of mixed crystals with controlled disorder, (KBr)1-x(KCN)x, (NaCl)1-x(NaCN)x, Zr1-xYxO2-x/2, and Ba1-xLaxF2+x, support the idea of a lower limit to the thermal conductivity of disordered solids. In each case, as x is increased, the data approach the calculated minimum conductivity based on a model originally due to Einstein. These measurements support the claim that the lattice vibrations of these disordered crystals are essentially the same as those of an amorphous solid.

引用

页码：6131 / 6140

页数：10

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