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Title: Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [1];  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
  2. National Institute of Standards and Technology, Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
  3. National Institute of Standards and Technology, Gaithersburg, MD (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)

Here, we have used scanning electron microscopy with polarization analysis and photoemission electron microscopy to image the two-dimensional magnetization of permalloy films patterned into Penrose P2 tilings (P2T). The interplay of exchange interactions in asymmetrically coordinated vertices and short-range dipole interactions among connected film segments stabilize magnetically ordered, spatially distinct sublattices that coexist with frustrated sublattices at room temperature. Numerical simulations that include long-range dipole interactions between sublattices agree with images of as-grown P2T samples and predict a magnetically ordered ground state for a two-dimensional quasicrystal lattice of classical Ising spins.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Argonne National Laboratory - Advanced Photon Source; National Science Foundation (NSF); National Institute of Standards and Technology (NIST) - Center for Nanoscale Science and Technology (CNST); USDOE
Grant/Contract Number:
AC02-06CH11357; FG02-97ER45653
OSTI ID:
1350531
Alternate ID(s):
OSTI ID: 1249728
Journal Information:
Physical Review B, Vol. 93, Issue 13; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 30 works
Citation information provided by
Web of Science

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Cited By (5)

Frustration and thermalization in an artificial magnetic quasicrystal journal December 2017
Advances in artificial spin ice journal November 2019
Real-space observation of magnetic excitations and avalanche behavior in artificial quasicrystal lattices journal October 2016
Tuning magnetic ordering in a dipolar square-kite tessellation journal February 2018
Angular Dependent Magnetization Dynamics with Mirror-symmetric Excitations in Artificial Quasicrystalline Nanomagnet Lattices text January 2018