Spontaneous Formation of Ordered Magnetic Domains by Patterning Stress

Jian Zhang, Won Kyu Lee, Rui Tu, Dongjoon Rhee, Rongzhi Zhao, Xinyu Wang, Xiaolian Liu, Xin Hu, Xuefeng Zhang, Teri W. Odom, Xuefeng Zhang, Mi Yan

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The formation of ordered magnetic domains in thin films is important for the magnetic microdevices in spin-electronics, magneto-optics, and magnetic microelectromechanical systems. Although inducing anisotropic stress in magnetostrictive materials can achieve the domain assembly, controlling magnetic anisotropy over microscale areas is challenging. In this work, we realized the microscopic patterning of magnetic domains by engineering stress distribution. Deposition of ferromagnetic thin films on nanotrenched polymeric layers induced tensile stress at the interfaces, giving rise to the directional magnetoelastic coupling to form ordered domains spontaneously. By changing the periodicity and shape of nanotrenches, we spatially tuned the geometric configuration of domains by design. Theoretical analysis and micromagnetic characterization confirmed that the local stress distribution by the topographic confinement dominates the forming mechanism of the directed magnetization.

Original languageEnglish (US)
Pages (from-to)5430-5437
Number of pages8
JournalNano letters
Issue number12
StatePublished - Jun 23 2021


  • Directed assembly
  • Magnetic domain
  • Magnetoelastic coupling
  • Magnetostrictive effect
  • Stress engineering

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


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