Thermal Conductivity and Heat Capacity of α- and β-BaB2O4 Single Crystals

被引：14
|
作者：
Popov, P. A. [1 ]
Moiseev, N. V. [1 ]
Kokh, A. E. [2 ]
Kokh, K. A. [2 ]
机构：
[1] Petrovskii State Univ, Bryansk 241036, Russia
[2] Russian Acad Sci, Siberian Div, Sobolev Inst Geol & Mineral, Novosibirsk 630090, Russia
来源：
INORGANIC MATERIALS | 2011年 / 47卷 / 02期
关键词：
BARIUM BORATE; GROWTH; GENERATION; SYSTEM; RANGE;
D O I：
10.1134/S0020168511020142
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The thermal conductivity of beta- and alpha-BaB2O4 single crystals has been measured at temperatures from 50 to 300 K by a steady-state axial flow technique. The 300-K thermal conductivity of the beta-polymorph along and across its c axis is 1.64 +/- 0.08 and 1.24 +/- 0.06 W/(m K), respectively, and that of the alpha-polymorph along its c axis is 1.65 +/- 0.08 W/(m K). Swirls and twin boundaries have an insignificant effect on the thermal conductivity of alpha-BaB2O4 crystals. The heat capacity of alpha-BaB2O4 measured in the range 56-300 K using adiabatic calorimetry differs little from that of the beta-polymorph.
引用
收藏
页码：163 / 166
页数：4
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