Thermal conductivity measurements using phase-shifting interferometry

Abstract

A new technique for measuring thermal conductivity of solids, including creation of a steady-state one-dimensional heat flow through a studied sample and measurement of temperature distribution using phase-shifting interferometry has been developed. The technique is a handy tool for studying small-size (> 1 mm) samples. The thermal conductivity of new magneto-optical materials such as Ce:TAG optical ceramics (0%, 0.05% and 0.1% doping), MgAl2O4 spinal ceramics, and Tb2O3–B2O3-GeO2 magneto-optical glass was measured.