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The viscosity and thermal diffusivity of In(x)Ga(1-x)As with various compositions has been measured up to 1,500 K. The double crucible method and its availabilities to measure the high vaporizing materials on both measurement could be verified. The thermophysical data of In(x)Ga(1-x)As (x = 0.3, 0.5, and 0.8) could be obtained for the first time. The temperature dependence of viscosity of molten In(0.8)Ga(0.2)As was expressed as eta(T) = 0.213 exp(1.85 x 10(exp 3)/T) (mPa s) by an oscillating cup method. The thermal diffusivity of molten In(0.8)Ga(0.2)As was 11 mm(sup 2)/s at 1,313 K and that of solid was 1.8 mm(sup 2)/s at 1,273 K by a laser flush method., NASDA Technical Memorandum, 宇宙開発事業団技術報告

Thermophysical properties of liquid metals, such as the density, the viscosity and the compressibility, are necessary for the modeling of diffusion phenomena in liquid germanium alloys. These properties were investigated by several kinds of experimental method and have been accumulated as the database of thermophysical properties., JAXA Research and Development Report, 宇宙航空研究開発機構研究開発報告