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Barkhausen Noise from Precessional Domain Wall Motion

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Barkhausen Noise from Precessional Domain Wall Motion. / Herranen, Touko; Laurson, Lasse.

In: Physical Review Letters, Vol. 122, No. 11, 117205, 21.03.2019, p. 1-5.

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Herranen, T & Laurson, L 2019, 'Barkhausen Noise from Precessional Domain Wall Motion', Physical Review Letters, vol. 122, no. 11, 117205, pp. 1-5. https://doi.org/10.1103/PhysRevLett.122.117205

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Herranen, Touko ; Laurson, Lasse. / Barkhausen Noise from Precessional Domain Wall Motion. In: Physical Review Letters. 2019 ; Vol. 122, No. 11. pp. 1-5.

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@article{30508dd1395d4ac9854972aaa53a03c5,
title = "Barkhausen Noise from Precessional Domain Wall Motion",
abstract = "The jerky dynamics of domain walls driven by applied magnetic fields in disordered ferromagnets - the Barkhausen effect - is a paradigmatic example of crackling noise. We study Barkhausen noise in disordered Pt/Co/Pt thin films due to precessional motion of domain walls using full micromagnetic simulations, allowing for a detailed description of the domain wall internal structure. In this regime the domain walls contain topological defects known as Bloch lines which repeatedly nucleate, propagate, and annihilate within the domain wall during the Barkhausen jumps. In addition to bursts of domain wall propagation, the in-plane Bloch line dynamics within the domain wall exhibits crackling noise and constitutes the majority of the overall spin rotation activity.",
author = "Touko Herranen and Lasse Laurson",
year = "2019",
month = "3",
day = "21",
doi = "10.1103/PhysRevLett.122.117205",
language = "English",
volume = "122",
pages = "1--5",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "11",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Barkhausen Noise from Precessional Domain Wall Motion

AU - Herranen, Touko

AU - Laurson, Lasse

PY - 2019/3/21

Y1 - 2019/3/21

N2 - The jerky dynamics of domain walls driven by applied magnetic fields in disordered ferromagnets - the Barkhausen effect - is a paradigmatic example of crackling noise. We study Barkhausen noise in disordered Pt/Co/Pt thin films due to precessional motion of domain walls using full micromagnetic simulations, allowing for a detailed description of the domain wall internal structure. In this regime the domain walls contain topological defects known as Bloch lines which repeatedly nucleate, propagate, and annihilate within the domain wall during the Barkhausen jumps. In addition to bursts of domain wall propagation, the in-plane Bloch line dynamics within the domain wall exhibits crackling noise and constitutes the majority of the overall spin rotation activity.

AB - The jerky dynamics of domain walls driven by applied magnetic fields in disordered ferromagnets - the Barkhausen effect - is a paradigmatic example of crackling noise. We study Barkhausen noise in disordered Pt/Co/Pt thin films due to precessional motion of domain walls using full micromagnetic simulations, allowing for a detailed description of the domain wall internal structure. In this regime the domain walls contain topological defects known as Bloch lines which repeatedly nucleate, propagate, and annihilate within the domain wall during the Barkhausen jumps. In addition to bursts of domain wall propagation, the in-plane Bloch line dynamics within the domain wall exhibits crackling noise and constitutes the majority of the overall spin rotation activity.

U2 - 10.1103/PhysRevLett.122.117205

DO - 10.1103/PhysRevLett.122.117205

M3 - Article

VL - 122

SP - 1

EP - 5

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 11

M1 - 117205

ER -