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Switching magnetic strip orientation using electric fields.

Aitian Chen1, Hong-Guang Piao2, Chenhui Zhang1

  • 1Physical Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia. xixiang.zhang@kaust.edu.sa.

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This summary is machine-generated.

Researchers demonstrate electric-field control of magnetic strip domains in nickel films using nanotrenches and ferroelectric substrates. This offers an energy-efficient method for manipulating magnetic domains, crucial for spintronic devices.

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Area of Science:

  • Spintronics
  • Materials Science
  • Condensed Matter Physics

Background:

  • Ordered magnetic domains are essential for spintronic microdevices.
  • Current methods for domain orientation (magnetic fields, currents) are energy-intensive.
  • Electric-field-driven control of magnetic domains is highly desirable but challenging.

Purpose of the Study:

  • To achieve energy-efficient, electric-field-driven rotation of ordered magnetic domains.
  • To investigate the manipulation of magnetic strip domains in nickel (Ni) films.
  • To explore the role of ferroelectric substrates and strain-mediated magnetoelectric coupling.

Main Methods:

  • Fabrication of Ni films on a nanotrenched polymeric layer atop a ferroelectric substrate.
  • Application of electric fields to the ferroelectric substrate.
  • Observation and analysis of magnetic strip domain orientation switching.

Main Results:

  • Ordered magnetic strip domains were successfully created in Ni films.
  • Electric fields applied to the substrate induced switching of domain orientation between the y- and x-axes.
  • Switching is attributed to electric-field-modulated in-plane magnetic anisotropies via strain-mediated magnetoelectric coupling.

Conclusions:

  • Demonstrated an energy-efficient method for manipulating magnetic domain orientation using electric fields.
  • The nanotrenched polymeric layer and ferroelectric substrate enable electric-field control.
  • This approach is promising for advanced spintronic applications requiring precise magnetic domain control.