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
Source: Applied physics letters, 2008, v. 93, no. 10, 102904, p. 102904-1-102904-3
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.
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.2979688
Rights: © 2008 American Institute of Physics.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in R. K. Zheng et al., Appl. Phys. Lett. 93, 102904 (2008) and may be found at https://dx.doi.org/10.1063/1.2979688
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