Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12345
Title: Investigation of substrate-induced strain effects in La 0.7Ca0.15Sr0.15 MnO3 thin films using ferroelectric polarization and the converse piezoelectric effect
Authors: Zheng, RK
Jiang, Y
Wang, Y 
Chan, HLW 
Choy, CL 
Luo, HS
Issue Date: 2008
Publisher: American Institute of Physics
Source: Applied physics letters, 2008, v. 93, no. 10, 102904 How to cite?
Journal: Applied physics letters 
Abstract: We have fabricated manganite film/ferroelectric crystal heterostructures by growing La0.7 Ca0.15 Sr0.15 MnO3 (LCSMO) films on ferroelectric 0.67Pb (Mg1/3 Nb2/3) O3 -0.33 PbTiO3 (PMN-PT) single-crystal substrates. The efficient mechanical coupling at the interface, originated from ferroelectric polarization or the converse piezoelectric effect in the PMN-PT substrate, gives rise to large changes in the strain state, electrical resistance, magnetoresistance, and insulator-to-metal transition temperature (TP) of the film. We interpreted all these changes in terms of substrate-induced strain, which modifies the tetragonal distortion of MnO6 octahedra and the electron-lattice coupling strength in the film. Quantitative relationships between TP and induced strain in the LCSMO film have been established.
URI: http://hdl.handle.net/10397/12345
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.2979688
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