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

► We successfully synthesized a single phase of SrPuO3 with an orthorhombic structure. ► We measured the Young's modulus and shear modulus of SrPuO3. ► We determined the Debye temperature of SrPuO3 from the sound velocities. ► The thermal conductivity of SrPuO3 was almost the same level as that of BaPuO3.