Thermal Conductivity of Gel-Grown Barium Oxalate at 326 and 335 K

Abstract EN

Single crystals of barium oxalate have been grown by gel method using agar-agar gel as media of growth at ambient temperature.

The grown crystal crystallizes under monoclinic structure.

Thermal conductivity of gel-grown barium oxalate crystals as a function of temperature has been studied at 326 and 335 K by using divided bar method.

The thermal conductivity of barium oxalate crystal at 326 K was found 3.685 W m−1 K−1 and 3.133 W m−1 K−1 at 335 K.

The reduction of thermal conductivity with the rise in temperature may be due to reduction in mean free path of phonons in the solid.