Thermal conductivity of negative-thermal-expansion oxide, Zr1-xYxW2O8 (x-0.00, 0.01)-temperature dependence and effect of structural phase transition

被引：25

作者：

Hashimoto, T

Kuwahara, J

Yoshida, T

Nashimoto, M

Takahashi, Y

Takahashi, K

Morito, Y

机构：

[1] Nihon Univ, Coll Humanities & Sci, Dept Integrated Sci Phys & Biol, Setagaya Ku, Tokyo 1568550, Japan

[2] Moritex Corp, Shibuya Ku, Tokyo 1500001, Japan

[3] Moritex Corp, Yaita Factory, Yaita, Tochigi 3292135, Japan

[4] Chuo Univ, Fac Sci & Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 1128551, Japan

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 131卷 / 3-4期

关键词：

heat conduction; phase transitions; thermal expansion;

D O I：

10.1016/j.ssc.2004.05.001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The temperature dependence of the thermal conductivity of the negative-thermal-expansion oxide, ZrW2O8, was evaluated. The room temperature thermal conductivities of ZrW2O8 and Zr0.99Y0.01W2O8 were approximately 0.80 and 0.65 W m(-1) K-1, respectively, which are lower than those of other functional oxides. It was revealed that the mechanism of thermal resistance is phonon-phonon scattering, which is affected by the phase transition at approximately 420 K. The different thermal conductivities of Zr0.99Y0.01W2O8 and ZrW2O8, suggests that Y3+ works as a scattering center for thermal conduction. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：217 / 221

页数：5

共 23 条

[1] THE THERMAL CONDUCTIVITY OF SOME POLYCRYSTALLINE SOLIDS AT LOW TEMPERATURES [J].