Technique for thermal conductivity measurements for organic materials over a wide temperature range

We have developed a technique to measure the thermal conductivity, which enables us to measure for organic samples over a wide temperature range between 4 K and room temperature. In our technique, two heaters and three thermometers are installed unlike the conventional one-heater-two-thermometer configuration. We describe the detailed design of our cell and the procedure for measurements. We have succeeded in measuring the thermal transport of organic molecular crystals with the conductivity of the order of similar to 1 W/K m, by employing our method. (C) 2005 American Institute of Physics.