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Magnetization reversal in nanotriangles fabricated by nanosphere lithography
Authors:X.H. WangM. Chandra Sekhar  I. PurnamaW.S. Lew  S. GoolaupC.X. Cong
Affiliation:
  • School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
  • Abstract:We report on the magnetization reversal behavior of sub 100-nm triangular shaped Ni80Fe20 dot array fabricated by nanosphere lithography. Hysteresis loops measured by magneto-optical Kerr effect magnetometry are classified into single and double-switched loops in 45 nm, 80 nm and 100 nm triangular nanomagnets. Micromagnetic simulations show that a plateau observed in the double-switched loop in the 100-nm triangular nanomagnet is due to the formation of a metastable mediating V state.
    Keywords:Nanosphere lithography   Magnetic nanostructures   Magnetization reversal   Magnetic property simulation
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