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Electric-field-induced strain effects on the magnetization of a P r0.67 S r0.33Mn O3 film

  • Bangmin Zhang
  • , Cheng Jun Sun
  • , Weiming Lü
  • , T. Venkatesan
  • , Myung Geun Han
  • , Yimei Zhu
  • , Jingsheng Chen
  • , Gan Moog Chow*
  • *Corresponding author for this work
  • National University of Singapore
  • United States Department of Energy
  • Brookhaven National Laboratory Condensed Matter Physics and Materials Science Department

Research output: Contribution to journalArticlepeer-review

Abstract

The electric-field control of magnetic properties of Pr0.67Sr0.33MnO3 (PSMO) film on piezoelectric Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMNT) substrate was investigated. The piezoelectric response of the PMNT substrate to the electric field produced strain that was coupled to the PSMO film. The in-plane compressive (tensile) strain increased (decreased) the magnetization. The change of magnetic moment was associated with the Mn ions. First-principles simulations showed that the strain-induced electronic redistribution of the two eg orbitals (3dz2 and 3dx2-y2) of Mn ions was responsible for the change of magnetic moment. This work demonstrates that the magnetoelectric effect in manganite/piezoelectric heterostructures originates from the change in eg orbital occupancy of Mn ions induced by strain rather than the interfacial effect.

Original languageEnglish
Article number174431
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number17
DOIs
StatePublished - 26 May 2015
Externally publishedYes

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