Study of the elastic constants in a La0.6Sr0.4MnO3 film by means of laser-generated ultrasonic wave method.
Two dimensional (2D) displacement field of the laser-generated ultrasonic wave is detected in a two-layered structure of La(0.6)Sr(0.4)MnO(3) (LSMO)/MgO system by means of the optical difference detection method. In order to obtain the elastic constants of the La(0.6)Sr(0.4)MnO(3) thin film, the displacement field of the laser-generated ultrasonic wave for the La(0.6)Sr(0.4)MnO(3)/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.
Huang
Q J
QJ
Institute of Acoustics, State Key Lab of Modern Acoustics, Nanjing University, HanKou Road 22, Nanjing 210093, China.
Cheng
Y
Y
Liu
X J
XJ
Xu
X D
XD
Zhang
S Y
SY