J. Phys. IV France
Volume 125, June 2005
Page(s) 249 - 251

J. Phys. IV France 125 (2005) 249-251

DOI: 10.1051/jp4:2005125059

Thermal diffusivity of La0.6Sr0.4MnO3 thin film investigated by transient thermal grating technique

D.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 $\alpha$ 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 $\alpha$ 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 $\alpha$-value is ascribed to the mismatch of lattice for the film material.

© EDP Sciences 2005