Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29933
Title: In situ dynamical control of the strain and magnetoresistance of La 0.7Ca0.15Sr0.15MnO3 thin films using the magnetostriction of Terfenol-D alloy
Authors: Zheng, RK
Choy, SH
Wang, Y 
Chan, HLW 
Choy, CL 
Luo, HS
Keywords: Magnetoelectric effect
Magnetoresistance
PMN-PT single crystal
Terfenol-D magnetostrictive alloy
Issue Date: 2011
Publisher: Elsevier
Source: Journal of alloys and compounds, 2011, v. 509, no. 14, p. 4878-4881 How to cite?
Journal: Journal of alloys and compounds 
Abstract: We fabricated a magnetoelectric laminate structure consisting of a magnetostrictive Tb0.3Dy0.7Fe1.92 (Terfenol-D) plate bonded to a La0.7Ca0.15Sr0.15MnO 3 (LCSMO)/0.67Pb(Mg1/3Nb2/3)O 3-0.33PbTiO3 (PMN-PT) structure where a LCSMO film was epitaxially grown on a PMN-PT single crystal substrate. When a dc magnetic field is applied perpendicular to the film plane, the magnetoresistance of the LCSMO film in the paramagnetic (ferromagnetic) state for the LCSMO/PMN-PT/Terfenol-D structure is larger (smaller) than that for the LCSMO/PMN-PT structure without Terfenol-D. These effects are caused by the magnetostriction-induced in-plane compressive strain in the Terfenol-D, which are transferred to the PMN-PT substrate, leading to a reduction in the in-plane tensile strain of the epitaxial LCSMO film and thereby modifying the magnetoresistance of the film.
URI: http://hdl.handle.net/10397/29933
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2011.01.197
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