skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Interplay between bulk and edge-bound topological defects in a square micromagnet

Abstract

A field-driven transformation of a domain pattern in a square micromagnet, defined in a thin film of La0.7Sr0.3MnO3, is discussed in terms of creation and annihilation of bulk vortices and edge-bound topological defects with half-integer winding numbers. The evolution of the domain pattern was mapped with soft x-ray photoemission electron microscopy and magnetic force microscopy. Micromagnetic modeling, permitting detailed analysis of the spin texture, accurately reproduces the measured domain state transformation. The simulations also helped stipulate the energy barriers associated with the creation and annihilation of the topological charges and thus to assess the stability of the domain states in this magnetic microstructure.

Authors:
 [1];  [1];  [1]; ORCiD logo [2];  [3];  [1];  [1]
  1. Norwegian Univ. of Science and Technology, Trondheim (Norway). Dept. of Electronic Systems
  2. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source; Univ. of California, Davis, CA (United States). Dept. of Materials Science and Engineering
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences
Publication Date:
Research Org.:
Norwegian Univ. of Science and Technology, Trondheim (Norway); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE; Research Council of Norway
OSTI Identifier:
1427590
Grant/Contract Number:  
AC05-00OR22725; 221860/F60
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 4; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; materials; ferromagnetism; microscopy; magnetism; magnetic ordering; chemical analysis; electron microscopy; magnetic force microscopy; photoemission electron microscopy; materials analysis

Citation Formats

Sloetjes, Sam D., Digernes, Einar, Olsen, Fredrik K., Chopdekar, Rajesh V., Retterer, Scott T., Folven, Erik, and Grepstad, Jostein K.. Interplay between bulk and edge-bound topological defects in a square micromagnet. United States: N. p., 2018. Web. https://doi.org/10.1063/1.5010166.
Sloetjes, Sam D., Digernes, Einar, Olsen, Fredrik K., Chopdekar, Rajesh V., Retterer, Scott T., Folven, Erik, & Grepstad, Jostein K.. Interplay between bulk and edge-bound topological defects in a square micromagnet. United States. https://doi.org/10.1063/1.5010166
Sloetjes, Sam D., Digernes, Einar, Olsen, Fredrik K., Chopdekar, Rajesh V., Retterer, Scott T., Folven, Erik, and Grepstad, Jostein K.. Mon . "Interplay between bulk and edge-bound topological defects in a square micromagnet". United States. https://doi.org/10.1063/1.5010166. https://www.osti.gov/servlets/purl/1427590.
@article{osti_1427590,
title = {Interplay between bulk and edge-bound topological defects in a square micromagnet},
author = {Sloetjes, Sam D. and Digernes, Einar and Olsen, Fredrik K. and Chopdekar, Rajesh V. and Retterer, Scott T. and Folven, Erik and Grepstad, Jostein K.},
abstractNote = {A field-driven transformation of a domain pattern in a square micromagnet, defined in a thin film of La0.7Sr0.3MnO3, is discussed in terms of creation and annihilation of bulk vortices and edge-bound topological defects with half-integer winding numbers. The evolution of the domain pattern was mapped with soft x-ray photoemission electron microscopy and magnetic force microscopy. Micromagnetic modeling, permitting detailed analysis of the spin texture, accurately reproduces the measured domain state transformation. The simulations also helped stipulate the energy barriers associated with the creation and annihilation of the topological charges and thus to assess the stability of the domain states in this magnetic microstructure.},
doi = {10.1063/1.5010166},
journal = {Applied Physics Letters},
number = 4,
volume = 112,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Critical thickness for high-remanent single-domain configurations in square ferromagnetic thin platelets
journal, March 2003


Observation of coupled vortex gyrations by 70-ps-time- and 20-nm-space-resolved full-field magnetic transmission soft x-ray microscopy
journal, November 2010

  • Jung, Hyunsung; Yu, Young-Sang; Lee, Ki-Suk
  • Applied Physics Letters, Vol. 97, Issue 22
  • DOI: 10.1063/1.3517496

Magnetic domain structure of La 0.7 Sr 0.3 MnO 3 nanoislands: Experiment and simulation
journal, April 2011

  • Kim, Eun Ji; Watts, John L. R.; Harteneck, Bruce
  • Journal of Applied Physics, Vol. 109, Issue 7
  • DOI: 10.1063/1.3544510

Complex magnetic reversal modes in low-symmetry nanoparticles
journal, March 2014

  • Escobar, R. A.; Vargas, N. M.; Castillo-Sepúlveda, S.
  • Applied Physics Letters, Vol. 104, Issue 12
  • DOI: 10.1063/1.4869549

Shape-dependent magnetization reversal processes and flux-closure configurations of microstructured epitaxial Fe(110) elements
journal, November 2001

  • König, C.; Sperlich, M.; Heinesch, R.
  • Applied Physics Letters, Vol. 79, Issue 22
  • DOI: 10.1063/1.1418033

Critical thicknesses of domain formations in cubic particles and thin films
journal, January 2004


The topological theory of defects in ordered media
journal, July 1979


Role of vortices in magnetization reversal of rectangular NiFe elements
journal, December 2000

  • Kirk, K. J.; Scheinfein, M. R.; Chapman, J. N.
  • Journal of Physics D: Applied Physics, Vol. 34, Issue 2
  • DOI: 10.1088/0022-3727/34/2/303

Control of spin configuration in half-metallic La 0.7 Sr 0.3 MnO 3 nano-structures
journal, August 2011

  • Rhensius, J.; Vaz, C. A. F.; Bisig, A.
  • Applied Physics Letters, Vol. 99, Issue 6
  • DOI: 10.1063/1.3623480

Magnetic Vortex Core Dynamics in Cylindrical Ferromagnetic Dots
journal, February 2006


Fractional Vortices and Composite Domain Walls in Flat Nanomagnets
journal, November 2005


Studying nanomagnets and magnetic heterostructures with X-ray PEEM at the Swiss Light Source
journal, October 2012

  • Le Guyader, Loïc; Kleibert, Armin; Fraile Rodríguez, Arantxa
  • Journal of Electron Spectroscopy and Related Phenomena, Vol. 185, Issue 10
  • DOI: 10.1016/j.elspec.2012.03.001

The design and verification of MuMax3
journal, October 2014

  • Vansteenkiste, Arne; Leliaert, Jonathan; Dvornik, Mykola
  • AIP Advances, Vol. 4, Issue 10
  • DOI: 10.1063/1.4899186

Magnetic Antivortex-Core Reversal by Circular-Rotational Spin Currents
journal, September 2010


Domain wall trajectory determined by its fractional topological edge defects
journal, July 2013

  • Pushp, Aakash; Phung, Timothy; Rettner, Charles
  • Nature Physics, Vol. 9, Issue 8
  • DOI: 10.1038/nphys2669

Single-Domain Circular Nanomagnets
journal, August 1999


Direct observation of the spin structures of vortex domain walls in ferromagnetic nanowires
journal, November 2008


Magnetic vortex cores as tunable spin-wave emitters
journal, July 2016

  • Wintz, Sebastian; Tiberkevich, Vasil; Weigand, Markus
  • Nature Nanotechnology, Vol. 11, Issue 11
  • DOI: 10.1038/nnano.2016.117

Virgin domain structures in mesoscopic Co patterns: Comparison between simulation and experiment
journal, August 2005

  • Cherifi, S.; Hertel, R.; Kirschner, J.
  • Journal of Applied Physics, Vol. 98, Issue 4
  • DOI: 10.1063/1.2007872

Tuning Magnetic Domain Structure in Nanoscale La 0.7 Sr 0.3 MnO 3 Islands
journal, June 2006

  • Takamura, Yayoi; Chopdekar, Rajesh V.; Scholl, Andreas
  • Nano Letters, Vol. 6, Issue 6
  • DOI: 10.1021/nl060615f

Stabilizing a magnetic vortex/antivortex array in single crystalline Fe/Ag(001) microstructures
journal, June 2014

  • Li, J.; Tan, A.; Moon, K. W.
  • Applied Physics Letters, Vol. 104, Issue 26
  • DOI: 10.1063/1.4887345

Current controlled random-access memory based on magnetic vortex handedness
journal, October 2008

  • Bohlens, Stellan; Krüger, Benjamin; Drews, André
  • Applied Physics Letters, Vol. 93, Issue 14
  • DOI: 10.1063/1.2998584

Edge-Soliton-Mediated Vortex-Core Reversal Dynamics
journal, April 2011


Magnetization reversal assisted by half antivortex states in nanostructured circular cobalt disks
journal, November 2014

  • Lara, A.; Dobrovolskiy, O. V.; Prieto, J. L.
  • Applied Physics Letters, Vol. 105, Issue 18
  • DOI: 10.1063/1.4900789

Symmetry breaking of magnetic vortices before annihilation
journal, September 2014

  • Pulecio, J. F.; Pollard, S. D.; Warnicke, P.
  • Applied Physics Letters, Vol. 105, Issue 13
  • DOI: 10.1063/1.4893422

Antiferromagnetic Domain Reconfiguration in Embedded LaFeO 3 Thin Film Nanostructures
journal, November 2010

  • Folven, Erik; Tybell, Thomas; Scholl, Andreas
  • Nano Letters, Vol. 10, Issue 11
  • DOI: 10.1021/nl1025908

Topological repulsion between domain walls in magnetic nanowires leading to the formation of bound states
journal, January 2012

  • Thomas, Luc; Hayashi, Masamitsu; Moriya, Rai
  • Nature Communications, Vol. 3, Issue 1
  • DOI: 10.1038/ncomms1808

Robustness of topological Hall effect of nontrivial spin textures
journal, May 2014

  • Jalil, Mansoor B. A.; Tan, Seng Ghee
  • Scientific Reports, Vol. 4, Issue 1
  • DOI: 10.1038/srep05123

Tailoring Spin Textures in Complex Oxide Micromagnets
journal, September 2016


Vortices in thin ferromagnetic films and the skyrmion number
journal, January 2007


Topologically protected dynamics of spin textures
journal, June 2015


Time-Resolved X-Ray Microscopy of Spin-Torque-Induced Magnetic Vortex Gyration
journal, April 2008


Crossover from Spin-Flop Coupling to Collinear Spin Alignment in Antiferromagnetic/Ferromagnetic Nanostructures
journal, April 2012

  • Folven, Erik; Scholl, Andreas; Young, Anthony
  • Nano Letters, Vol. 12, Issue 5
  • DOI: 10.1021/nl300361e

Magnetic vortex core reversal by excitation with short bursts of an alternating field
journal, November 2006

  • Van Waeyenberge, B.; Puzic, A.; Stoll, H.
  • Nature, Vol. 444, Issue 7118
  • DOI: 10.1038/nature05240

Spin-Flop Coupling and Exchange Bias in Embedded Complex Oxide Micromagnets
journal, September 2013