TITLE

Voltage-controlled epitaxial strain in La0.7Sr0.3MnO3/Pb(Mg1/3Nb2/3)O3-PbTiO3(001) films

AUTHOR(S)
Thiele, C.; Dörr, K.; Fähler, S.; Schultz, L.; Meyer, D. C.; Levin, A. A.; Paufler, P.
PUB. DATE
December 2005
SOURCE
Applied Physics Letters;12/26/2005, Vol. 87 Issue 26, p262502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Epitaxially grown La0.7Sr0.3MnO3 thin films show resistance modulations induced by the inverse piezoeffect of the employed Pb(Mg1/3Nb2/3)O3-PbTiO3(001) (PMN-PT) substrates. The in-plane strain state of the films can continuously be tuned by application of a piezovoltage to PMN-PT. The lattice deformation of a PMN-PT(001) substrate was quantified by x-ray measurements under an electric field. Variation of in-plane lattice parameters by ∼0.06% reversibly changes the resistance of the manganite films by up to 9% at 300 K and shifts the magnetic Curie temperature. Films of different thicknesses from 50 to 290 nm, offering different as-grown strain states, have been studied.
ACCESSION #
19406362

 

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