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Journal Articles Nature Communications Year : 2013

Strain-controlled magnetic domain wall propagation in hybrid piezoelectric/ferromagnetic structures

N. Lei
  • Function : Author
T. Devolder
  • Function : Author
G. Agnus
  • Function : Author
P. Aubert
  • Function : Author
Laurent Daniel
Jv Kim
  • Function : Author
W. Zhao
  • Function : Author
T. Trypiniotis
  • Function : Author
Rp Cowburn
  • Function : Author
C. Chappert
  • Function : Author
D. Ravelosona
  • Function : Author
P. Lecoeur
  • Function : Author

Abstract

The control of magnetic order in nanoscale devices underpins many proposals for integrating spintronics concepts into conventional electronics. A key challenge lies in finding an energy-efficient means of control, as power dissipation remains an important factor limiting future miniaturization of integrated circuits. One promising approach involves magnetoelectric coupling in magnetostrictive/piezoelectric systems, where induced strains can bear directly on the magnetic anisotropy. While such processes have been demonstrated in several multiferroic heterostructures, the incorporation of such complex materials into practical geometries has been lacking. Here we demonstrate the possibility of generating sizeable anisotropy changes, through induced strains driven by applied electric fields, in hybrid piezoelectric/spin-valve nanowires. By combining magneto-optical Kerr effect and magnetoresistance measurements, we show that domain wall propagation fields can be doubled under locally applied strains. These results highlight the prospect of constructing low-power domain wall gates for magnetic logic devices.

Dates and versions

hal-00931728 , version 1 (15-01-2014)

Identifiers

Cite

N. Lei, T. Devolder, G. Agnus, P. Aubert, Laurent Daniel, et al.. Strain-controlled magnetic domain wall propagation in hybrid piezoelectric/ferromagnetic structures. Nature Communications, 2013, 4, pp.1378. ⟨10.1038/ncomms2386⟩. ⟨hal-00931728⟩
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