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Title: Mutual influence between macrospin reversal order and spin-wave dynamics in isolated artificial spin-ice vertices

Abstract

In this paper, we theoretically and experimentally investigate magnetization reversal and associated spin-wave dynamics of isolated threefold vertices that constitute a Kagome lattice. The three permalloy macrospins making up the vertex have an elliptical cross section and a uniform thickness. We study the dc magnetization curve and the frequency versus field curves (dispersions) of those spin-wave modes that produce the largest response. We also investigate each macrospin reversal from a dynamic perspective, by performing micromagnetic simulations of the reversal processes, and revealing their relationships to the soft-mode profile calculated at the equilibrium state immediately before reversal. The theoretical results are compared with the measured magnetization curves and ferromagnetic resonance spectra. Finally, the agreement achieved suggests that a much deeper understanding of magnetization reversal and accompanying hysteresis can be achieved by combining theoretical calculations with static and dynamic magnetization experiments.

Authors:
 [1];  [1];  [2];  [2];  [3];  [3];  [4];  [4]
+ Show Author Affiliations
  1. Univ. of Ferrara (Italy). Dept. of Physics and Earth Sciences
  2. Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  4. Univ. of Kentucky, Lexington, KY (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States); Univ. of Kentucky, Lexington, KY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1427493
Alternate Identifier(s):
OSTI ID: 1417409
Grant/Contract Number:  
AC02-06CH11357; DMR 1507058; DMR 1506979
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 1; 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; magnetization switching; micromagnetism; spin ice; spin waves; magnetic nanoparticles; magnonic crystals; ferromagnetic resonance; Landau-Lifschitz-Gilbert equation; magnetization measurements

Citation Formats

Montoncello, F., Giovannini, L., Bang, Wonbae, Ketterson, J. B., Jungfleisch, M. B., Hoffmann, A., Farmer, B. W., and De Long, L. E. Mutual influence between macrospin reversal order and spin-wave dynamics in isolated artificial spin-ice vertices. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.014421.
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Montoncello, F., Giovannini, L., Bang, Wonbae, Ketterson, J. B., Jungfleisch, M. B., Hoffmann, A., Farmer, B. W., & De Long, L. E. Mutual influence between macrospin reversal order and spin-wave dynamics in isolated artificial spin-ice vertices. United States. https://doi.org/10.1103/PhysRevB.97.014421
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Montoncello, F., Giovannini, L., Bang, Wonbae, Ketterson, J. B., Jungfleisch, M. B., Hoffmann, A., Farmer, B. W., and De Long, L. E. Thu . "Mutual influence between macrospin reversal order and spin-wave dynamics in isolated artificial spin-ice vertices". United States. https://doi.org/10.1103/PhysRevB.97.014421. https://www.osti.gov/servlets/purl/1427493.
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@article{osti_1427493,
title = {Mutual influence between macrospin reversal order and spin-wave dynamics in isolated artificial spin-ice vertices},
author = {Montoncello, F. and Giovannini, L. and Bang, Wonbae and Ketterson, J. B. and Jungfleisch, M. B. and Hoffmann, A. and Farmer, B. W. and De Long, L. E.},
abstractNote = {In this paper, we theoretically and experimentally investigate magnetization reversal and associated spin-wave dynamics of isolated threefold vertices that constitute a Kagome lattice. The three permalloy macrospins making up the vertex have an elliptical cross section and a uniform thickness. We study the dc magnetization curve and the frequency versus field curves (dispersions) of those spin-wave modes that produce the largest response. We also investigate each macrospin reversal from a dynamic perspective, by performing micromagnetic simulations of the reversal processes, and revealing their relationships to the soft-mode profile calculated at the equilibrium state immediately before reversal. The theoretical results are compared with the measured magnetization curves and ferromagnetic resonance spectra. Finally, the agreement achieved suggests that a much deeper understanding of magnetization reversal and accompanying hysteresis can be achieved by combining theoretical calculations with static and dynamic magnetization experiments.},
doi = {10.1103/PhysRevB.97.014421},
journal = {Physical Review B},
number = 1,
volume = 97,
place = {United States},
year = {Thu Jan 18 00:00:00 EST 2018},
month = {Thu Jan 18 00:00:00 EST 2018}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevB.97.014421
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Cited by: 27 works
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Figures / Tables:

Figure 1 Figure 1: Hysteresis of the magnetization component MH parallel to the applied field H for the symmetric (solid line) and asymmetric (dashed line) samples normalized to the saturation magnetization MS. The geometry of the three-lobed vertex structures are shown in insets a) and b).
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text, January 2011

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text, January 2014

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text, January 2015

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text, January 2016

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text, January 2017

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text, January 2017

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    Works referencing / citing this record:

    Advances in artificial spin ice
    journal, November 2019

    • Skjærvø, Sandra H.; Marrows, Christopher H.; Stamps, Robert L.
    • Nature Reviews Physics, Vol. 2, Issue 1
    • DOI: 10.1038/s42254-019-0118-3

    Thickness dependence of spin wave dynamics in three-fold nano-ellipse clusters
    journal, October 2018

    • Bang, Wonbae; Montoncello, F.; Hoffmann, A.
    • AIP Advances, Vol. 8, Issue 10
    • DOI: 10.1063/1.5043097

    Spin wave propagation properties across configurational antiferro/ferro-magnetic transitions
    journal, December 2018

    • Kuźma, D.; Montoncello, F.; Sobieszczyk, P.
    • Journal of Applied Physics, Vol. 124, Issue 22
    • DOI: 10.1063/1.5057419

    Ferromagnetic resonance spectra of permalloy nano-ellipses as building blocks for complex magnonic lattices
    journal, November 2019

    • Bang, Wonbae; Montoncello, F.; Kaffash, M. T.
    • Journal of Applied Physics, Vol. 126, Issue 20
    • DOI: 10.1063/1.5126679

    On the micromagnetic behavior of dipolar-coupled nanomagnets in defective square artificial spin ice systems
    journal, December 2019

    • Keswani, Neeti; Das, Pintu
    • Journal of Applied Physics, Vol. 126, Issue 21
    • DOI: 10.1063/1.5127262

    Magnetization dynamics in artificial spin ice
    journal, October 2019

    Tunable magnetization dynamics in artificial spin ice via shape anisotropy modification
    journal, August 2019

    Spin-wave dynamics in artificial anti-spin-ice systems: Experimental and theoretical investigations
    journal, August 2018

    Angular-dependent spin dynamics of a triad of permalloy macrospins
    journal, January 2019

    Sculpting the Spin-Wave Response of Artificial Spin Ice via Microstate Selection
    text, January 2018

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      Figures / Tables found in this record:

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      Figure 3 (p. 19)figure
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      Figure 5 (p. 21)figure
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      Figure 7 (p. 23)figure
      Figure 8 (p. 23)figure
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