Influence of structural defects on the thermal conductivity of polycrystalline and single-crystal PbTe

被引：10
|
作者：
Bagieva, G. Z. [1 ]
Murtuzov, G. M. [1 ]
Abdinova, G. D. [1 ]
Allakhverdiev, E. A. [1 ]
Abdinov, D. Sh [1 ]
机构：
[1] Azerbaijan Acad Sci, Abdullaev Inst Phys, AZ-1143 Baku, Azerbaijan
来源：
INORGANIC MATERIALS | 2012年 / 48卷 / 08期
关键词：
Structural Defect; PbTe; PbSe; Single Crystal Sample; Excess Tellurium;
D O I：
10.1134/S0020168512070023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have measured the thermal conductivity of unannealed and annealed (800 K, 120 h) polycrystalline and single-crystal PbTe samples at temperatures from 80 to 303 K, evaluated the electronic and lattice components of their thermal conductivity, and determined the thermal resistivity due to structural defects, whose concentration in the unannealed single-crystal samples reaches similar to 10(17) cm(-3). The results demonstrate that the thermal resistivity of the unannealed polycrystalline and single-crystal samples is 9.4 and 1.7 cm K/W, respectively. Annealing eliminates the defects, thereby increasing the lattice thermal conductivity of the material.
引用
收藏
页码：789 / 791
页数：3
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