Journal
ULTRASONICS
Volume 44, Issue -, Pages E1223-E1227Publisher
ELSEVIER
DOI: 10.1016/j.ultras.2006.05.193
Keywords
elastic constant; ultrasonic wave; La0.6Sr0.4MnO3 film; finite element method (FEM)
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Two dimensional ( 2D) displacement field of the laser- generated ultrasonic wave is detected in a two- layered structure of La0.6Sr0.4MnO3 ( LSMO)/ MgO system by means of the optical difference detection method. In order to obtain the elastic constants of the La0.6Sr0.4MnO3 thin fillm, the displacement field of the laser- generated ultrasonic wave for the La0.6Sr0.4MnO3/ MgO system is analyzed with finite element method ( FEM). We further compare the theoretical simulations with the experimental results, and the elastic constants for the LSMO film, i. e., the Young's modulus and Poisson ratio, are obtained. (c) 2006 Elsevier B. V. All rights reserved.
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