Abstract
A Cs2TeMo3O12 single crystal with dimensions of 17mm×17mm×18mm was grown using the top-seeded solution growth method. Thermal properties, including thermal expansion, specific heat, thermal diffusivity and thermal conductivity, were investigated as a function of temperature. The average linear thermal expansion coefficients along different crystallographic directions were measured to be αa=7.34×10−6K−1 and αc=32.02×10−6K−1 over the temperature range of 30–430°C. The specific heat was measured to be 0.400–0.506Jg−1K−1 from 22°C to 440°C. The thermal conductivity was calculated to be 1.86 and 0.76Wm−1K−1 at 22°C along the a and c axes, respectively. With increasing temperature from 22 to 430°C, the thermal conductivity decreases by 33.0% along the a axis, while it decreases by 18.5% below 200°C and then remains unchanged along the c axis. The relationship between structure and the thermal properties is also discussed.
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