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Thermophysical properties of perovskite type alkaline-earth metals and plutonium complex oxides

Tanaka, Kosuke ; Sato, Isamu; Hirosawa, Takashi ; Kurosaki, Ken*; Muta, Hiroaki*; Yamanaka, Shinsuke*

Polycrystalline specimens of strontium plutonate, SrPuO$$_{3}$$, have been prepared by mixing the appropriate amounts of PuO$$_{2}$$ and SrCO$$_{3}$$ powders followed by reacting and sintering at 1600 K under the flowing gas atmosphere of dry-air. The sintered specimens had a single phase of orthorhombic perovskite structure and were crack-free. The elastic moduli of SrPuO$$_{3}$$ were determined from the longitudinal and shear sound velocities. The Debye temperature was also determined from the sound velocities and lattice parameter measurements. The thermal conductivity of SrPuO$$_{3}$$ was calculated from the measured density at room temperature, literature values of heat capacity, and thermal diffusivity measured by laser flash method in vacuum.

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Category:Materials Science, Multidisciplinary

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