Hysteresis-free switching between vortex and collinear magnetic states

Erik Östman; Unnar B. Arnalds; Emil Melander; Vassilios Kapaklis; Gunnar K. Pálsson; Alexander Y. Saw; Marc A. Verschuuren; Florian Kronast; Evangelos Th Papaioannou; Charles S. Fadley; Björgvin HjÖrvarsson

doi:10.1088/1367-2630/16/5/053002

Hysteresis-free switching between vortex and collinear magnetic states

Erik Östman, Unnar B. Arnalds, Emil Melander, Vassilios Kapaklis, Gunnar K. Pálsson, Alexander Y. Saw, Marc A. Verschuuren, Florian Kronast, Evangelos Th Papaioannou, Charles S. Fadley, Björgvin HjÖrvarsson

Faculty of Physical Sciences

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We demonstrate a lossless switching between vortex and collinear magnetic states in circular FePd disks arranged in a square lattice. Above a bifurcation temperature (T_e) we show that thermal fluctuations are enough to facilitate flipping between the two distinctly different magnetic states. We find that the temperature dependence of the vortex annihilation and nucleation fields can be described by a simple power law relating them to the saturation magnetization.

Original language	English
Article number	053002
Journal	New Journal of Physics
Volume	16
DOIs	https://doi.org/10.1088/1367-2630/16/5/053002
Publication status	Published - May 2014

Other keywords

magnetic nanostructures
magnetic vortices
thermal fluctuations

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10.1088/1367-2630/16/5/053002

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title = "Hysteresis-free switching between vortex and collinear magnetic states",

abstract = "We demonstrate a lossless switching between vortex and collinear magnetic states in circular FePd disks arranged in a square lattice. Above a bifurcation temperature (Te) we show that thermal fluctuations are enough to facilitate flipping between the two distinctly different magnetic states. We find that the temperature dependence of the vortex annihilation and nucleation fields can be described by a simple power law relating them to the saturation magnetization.",

keywords = "magnetic nanostructures, magnetic vortices, thermal fluctuations",

author = "Erik {\"O}stman and Arnalds, {Unnar B.} and Emil Melander and Vassilios Kapaklis and P{\'a}lsson, {Gunnar K.} and Saw, {Alexander Y.} and Verschuuren, {Marc A.} and Florian Kronast and Papaioannou, {Evangelos Th} and Fadley, {Charles S.} and Bj{\"o}rgvin Hj{\"O}rvarsson",

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doi = "10.1088/1367-2630/16/5/053002",

language = "English",

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T1 - Hysteresis-free switching between vortex and collinear magnetic states

AU - Östman, Erik

AU - Arnalds, Unnar B.

AU - Melander, Emil

AU - Kapaklis, Vassilios

AU - Pálsson, Gunnar K.

AU - Saw, Alexander Y.

AU - Verschuuren, Marc A.

AU - Kronast, Florian

AU - Papaioannou, Evangelos Th

AU - Fadley, Charles S.

AU - HjÖrvarsson, Björgvin

PY - 2014/5

Y1 - 2014/5

N2 - We demonstrate a lossless switching between vortex and collinear magnetic states in circular FePd disks arranged in a square lattice. Above a bifurcation temperature (Te) we show that thermal fluctuations are enough to facilitate flipping between the two distinctly different magnetic states. We find that the temperature dependence of the vortex annihilation and nucleation fields can be described by a simple power law relating them to the saturation magnetization.

AB - We demonstrate a lossless switching between vortex and collinear magnetic states in circular FePd disks arranged in a square lattice. Above a bifurcation temperature (Te) we show that thermal fluctuations are enough to facilitate flipping between the two distinctly different magnetic states. We find that the temperature dependence of the vortex annihilation and nucleation fields can be described by a simple power law relating them to the saturation magnetization.

KW - magnetic nanostructures

KW - magnetic vortices

KW - thermal fluctuations

UR - http://www.scopus.com/inward/record.url?scp=84900416300&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/16/5/053002

DO - 10.1088/1367-2630/16/5/053002

M3 - Article

AN - SCOPUS:84900416300

SN - 1367-2630

VL - 16

JO - New Journal of Physics

JF - New Journal of Physics

M1 - 053002

ER -

Hysteresis-free switching between vortex and collinear magnetic states

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