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

Abstract

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.

Authors:
 [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)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
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
OSTI Identifier:
1350531
Alternate Identifier(s):
OSTI ID: 1249728
Grant/Contract Number:  
AC02-06CH11357; FG02-97ER45653
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 13; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; artificial spin ice; ferromagnetic domain; frustrated magnetism; magnetic order; micromagnetic simulations; quasicrystals

Citation Formats

Farmer, B., Bhat, V. S., Balk, A., Teipel, E., Smith, N., Unguris, J., Keavney, D. J., Hastings, J. T., and De Long, L. E. Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.134428.
Farmer, B., Bhat, V. S., Balk, A., Teipel, E., Smith, N., Unguris, J., Keavney, D. J., Hastings, J. T., & De Long, L. E. Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals. United States. doi:10.1103/PhysRevB.93.134428.
Farmer, B., Bhat, V. S., Balk, A., Teipel, E., Smith, N., Unguris, J., Keavney, D. J., Hastings, J. T., and De Long, L. E. Mon . "Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals". United States. doi:10.1103/PhysRevB.93.134428. https://www.osti.gov/servlets/purl/1350531.
@article{osti_1350531,
title = {Direct imaging of coexisting ordered and frustrated sublattices in artificial ferromagnetic quasicrystals},
author = {Farmer, B. and Bhat, V. S. and Balk, A. and Teipel, E. and Smith, N. and Unguris, J. and Keavney, D. J. and Hastings, J. T. and De Long, L. E.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.93.134428},
journal = {Physical Review B},
number = 13,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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Cited by: 5 works
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    Works referencing / citing this record:

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