J. Phys. IV France 125 (2005) 249-251
Thermal diffusivity of La0.6Sr0.4MnO3 thin film investigated by transient thermal grating techniqueD.L. Niu, X.J. Liu, Q.J. Huang and S.Y. Zhang
State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China
We investigate thermal diffusivity of La0.6Sr0.4MnO3 thin film by means of transient thermal grating technique. The transient thermal grating signal is analysised by Green's functions, and the thermal diffusivity of La0.6Sr0.4MnO3 film is determined to be 0.92 mm2s-1. Comparison with that (~1 mm2s-1) of the ceramic material, the smaller -value is ascribed to the mismatch of lattice for the film material.
© EDP Sciences 2005