Thermal conductivity of SnO2single crystals

Abstract

SnO2 single crystals have been grown by use of vapour-phase reaction method. The crystals obtained are characterised by chemical analysis and electrical measurements. The density of the crystals was determined as 6.994+or-0.001 g cm-3. The thermal conductivity measured is discussed for different orientations of the crystals and as a function of temperature. The thermal conductivity parallel to the c axis is 0.98 WK-1 cm-1 at room temperature and 17.5 WK-1 cm-1 at 26K: the ratio of thermal conductivities parallel and perpendicular to the c axis is lambda /sub //// lambda perpendicular to =1.78 at 300K and varies with temperature.