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Phase competition induced nonlinear elastoresistance effect in thin films of Pr0.7Sr0.3MnO3

Authors :
Jianfeng Wang
J. Gao
Source :
Applied Physics Letters. 100:131903
Publication Year :
2012
Publisher :
AIP Publishing, 2012.

Abstract

Thin films of Pr0.7Sr0.3MnO3 grown on 0.7PbMg1/3Nb2/3O3-0.3PbTiO3 substrates were reversibly strained via the converse piezoelectric effect. The transport properties of Pr0.7Sr0.3MnO3 were effectively modulated by the electric fields across the substrate. The roles of strain were explored by measuring resistance as a function of electric field and temperature. For all samples, deviations from a linear resistance-voltage relation were found. Two quantities, area difference and standard deviation, were used to characterize the nonlinearity. Both the nonlinearity and magnitude of resistance modulation peak at temperatures close to those of metal-insulator transition, indicating that the competing phases significantly changes the behaviors of strain responses.

Details

ISSN :
10773118 and 00036951
Volume :
100
Database :
OpenAIRE
Journal :
Applied Physics Letters
Accession number :
edsair.doi...........ec7a214e71c11af10c4a89a64b11b3de
Full Text :
https://doi.org/10.1063/1.3697687