Quantifying thickness-dependent charge mediated magnetoelectric coupling in magnetic/dielectric thin film heterostructures

  • Z. Zhou
  • , T. X. Nan
  • , Y. Gao
  • , X. Yang
  • , S. Beguhn
  • , M. Li
  • , Y. Lu
  • , J. L. Wang
  • , M. Liu
  • , K. Mahalingam
  • , B. M. Howe
  • , G. J. Brown
  • , N. X. Sun

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Precise quantification of the magnetoelectric coupling strength in surface charge induced magnetoelectric effect was investigated in NiFe/SrTiO3 thin film heterostructures with different ultra-thin NiFe thicknesses through voltage induced ferromagnetic resonance. The voltage induced ferromagnetic resonance field shifts in these NiFe/SrTiO3 thin films heterostructures showed a maximum value of 65 Oe at an intermediate NiFe layer thickness of ∼1.2 nm, which was interpreted based on the thin film growth model at the low-thicknesses and on the charge screening effect at large thicknesses. The precise quantification and understanding of the magnetoelectric coupling in magnetic/dielectric thin films heterostructures constitute an important step toward real applications.

Original languageEnglish
Article number232906
JournalApplied Physics Letters
Volume103
Issue number23
DOIs
StatePublished - 2 Dec 2013

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