Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/552
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Title: Determination of the strain dependence of resistance in La[sub 0.7]Sr[sub 0.3]MnO₃/PMN-PT using the converse piezoelectric effect
Authors: Zheng, RK
Wang, Y 
Chan, HLW 
Choy, CL 
Luo, H
Issue Date: 5-Jun-2007
Source: Physical review. B, Condensed matter and materials physics, 5 June 2007, v. 75, 212102, p. 1-4
Abstract: We have deposited La[sub 0.7]Sr[sub 0.3]MnO₃ (LSMO) thin films on piezoelectric (1−x)Pb(Mg[sub ⅓]Nb[sub ⅔])O₃−xPbTiO₃ (x~0.3)(PMN-PT) single-crystal substrates and studied the effects of substrate-induced lattice strain on the resistance of the LSMO films. By applying electric fields across the PMN-PT substrate, we in situ induce an in-plane compressive (tensile) strain in the PMN-PT substrate via the converse piezoelectric effect. The induced strain is transferred to the LSMO film, which then imposes an in-plane compressive (tensile) strain on the LSMO film, thereby causing a linear decrease (increase) in the resistance of the LSMO film. Based on the experimental results, we establish quantitative relationships between the resistance of the LSMO film and the converse piezoelectric-effect-induced out-of-plane and in-plane strains in the PMN-PT substrate and LSMO film, respectively.
Keywords: Lanthanum compounds
Strontium compounds
Lead compounds
Electrical resistivity
Piezoelectric materials
Piezoelectric thin films
Publisher: American Physical Society
Journal: Physical review. B, Condensed matter and materials physics 
ISSN: 1098-0121
EISSN: 1550-235X
Rights: Physical Review B © 2007 American Physical Society. The Journal's web site is located at http://prb.aps.org/
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