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Fast Magnetic Domain-Wall Motion in a Ring-Shaped Nanowire Driven by a Voltage

Journal Article


Abstract


  • Magnetic domain-wall motion driven by a voltage dissipates much less heat than by a current, but none of the existing reports have achieved speeds exceeding 100 m/s. Here phase-field and finite-element simulations were combined to study the dynamics of strain-mediated voltage-driven magnetic domain-wall motion in curved nanowires. Using a ring-shaped, rough-edged magnetic nanowire on top of a piezoelectric disk, we demonstrate a fast voltage-driven magnetic domain-wall motion with average velocity up to 550 m/s, which is comparable to current-driven wall velocity. An analytical theory is derived to describe the strain dependence of average magnetic domain-wall velocity. Moreover, one 180° domain-wall cycle around the ring dissipates an ultrasmall amount of heat, as small as 0.2 fJ, approximately 3 orders of magnitude smaller than those in current-driven cases. These findings suggest a new route toward developing high-speed, low-power-dissipation domain-wall spintronics.

UOW Authors


  •   Hu, Jia-Mian (external author)
  •   Yang, Tiannan (external author)
  •   Momeni, Kasra (external author)
  •   Cheng, Xiaoxing (external author)
  •   Chen, Lei (external author)
  •   Lei, Shiming (external author)
  •   Zhang, Shujun
  •   Trolier-McKinstry, Susan (external author)
  •   Gopalan, Venkatraman (external author)
  •   Carman, Gregory (external author)
  •   Nan, Ce-Wen (external author)
  •   Chen, Long-Qing (external author)

Publication Date


  • 2016

Citation


  • Hu, J., Yang, T., Momeni, K., Cheng, X., Chen, L., Lei, S., Zhang, S., Trolier-McKinstry, S., Gopalan, V., Carman, G. P., Nan, C. & Chen, L. (2016). Fast Magnetic Domain-Wall Motion in a Ring-Shaped Nanowire Driven by a Voltage. Nano Letters, 16 (4), 2341-2348.

Scopus Eid


  • 2-s2.0-84964955476

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2839

Number Of Pages


  • 7

Start Page


  • 2341

End Page


  • 2348

Volume


  • 16

Issue


  • 4

Place Of Publication


  • United States

Abstract


  • Magnetic domain-wall motion driven by a voltage dissipates much less heat than by a current, but none of the existing reports have achieved speeds exceeding 100 m/s. Here phase-field and finite-element simulations were combined to study the dynamics of strain-mediated voltage-driven magnetic domain-wall motion in curved nanowires. Using a ring-shaped, rough-edged magnetic nanowire on top of a piezoelectric disk, we demonstrate a fast voltage-driven magnetic domain-wall motion with average velocity up to 550 m/s, which is comparable to current-driven wall velocity. An analytical theory is derived to describe the strain dependence of average magnetic domain-wall velocity. Moreover, one 180° domain-wall cycle around the ring dissipates an ultrasmall amount of heat, as small as 0.2 fJ, approximately 3 orders of magnitude smaller than those in current-driven cases. These findings suggest a new route toward developing high-speed, low-power-dissipation domain-wall spintronics.

UOW Authors


  •   Hu, Jia-Mian (external author)
  •   Yang, Tiannan (external author)
  •   Momeni, Kasra (external author)
  •   Cheng, Xiaoxing (external author)
  •   Chen, Lei (external author)
  •   Lei, Shiming (external author)
  •   Zhang, Shujun
  •   Trolier-McKinstry, Susan (external author)
  •   Gopalan, Venkatraman (external author)
  •   Carman, Gregory (external author)
  •   Nan, Ce-Wen (external author)
  •   Chen, Long-Qing (external author)

Publication Date


  • 2016

Citation


  • Hu, J., Yang, T., Momeni, K., Cheng, X., Chen, L., Lei, S., Zhang, S., Trolier-McKinstry, S., Gopalan, V., Carman, G. P., Nan, C. & Chen, L. (2016). Fast Magnetic Domain-Wall Motion in a Ring-Shaped Nanowire Driven by a Voltage. Nano Letters, 16 (4), 2341-2348.

Scopus Eid


  • 2-s2.0-84964955476

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2839

Number Of Pages


  • 7

Start Page


  • 2341

End Page


  • 2348

Volume


  • 16

Issue


  • 4

Place Of Publication


  • United States