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Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system. / Moskalenko, Mariia; Bessarab, Pavel F.; Uzdin, Valery M.; Jónsson, Hannes.

In: AIP Advances, Vol. 6, No. 2, 025213, 01.02.2016.

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

Harvard

Moskalenko, M, Bessarab, PF, Uzdin, VM & Jónsson, H 2016, 'Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system', AIP Advances, vol. 6, no. 2, 025213. https://doi.org/10.1063/1.4942428

APA

Moskalenko, M., Bessarab, P. F., Uzdin, V. M., & Jónsson, H. (2016). Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system. AIP Advances, 6(2), [025213]. https://doi.org/10.1063/1.4942428

Vancouver

Moskalenko M, Bessarab PF, Uzdin VM, Jónsson H. Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system. AIP Advances. 2016 Feb 1;6(2). 025213. https://doi.org/10.1063/1.4942428

Author

Moskalenko, Mariia ; Bessarab, Pavel F. ; Uzdin, Valery M. ; Jónsson, Hannes. / Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system. In: AIP Advances. 2016 ; Vol. 6, No. 2.

BibTeX

@article{1a8adb0f8c414f499f9e3af83db08265,
title = "Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system",
abstract = "The temperature dependence of the response of a magnetic system to an applied field can be understood qualitatively by considering variations in the energy surface characterizing the system and estimated quantitatively with rate theory. In the system analysed here, Fe/Sm-Co spring magnet, the width of the hysteresis loop is reduced to a half when temperature is raised from 25 K to 300 K. This narrowing can be explained and reproduced quantitatively without invoking temperature dependence of model parameters as has typically been done in previous data analysis. The applied magnetic field lowers the energy barrier for reorientation of the magnetization but thermal activation brings the system over the barrier. A 2-dimensional representation of the energy surface is developed and used to gain insight into the transition mechanism and to demonstrate how the applied field alters the transition path. Our results show the importance of explicitly including the effect of thermal activation when interpreting experiments involving the manipulation of magnetic systems at finite temperature.",
author = "Mariia Moskalenko and Bessarab, {Pavel F.} and Uzdin, {Valery M.} and Hannes J{\'o}nsson",
note = "Publisher Copyright: {\textcopyright} 2016 Author(s). Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",
year = "2016",
month = feb,
day = "1",
doi = "10.1063/1.4942428",
language = "English",
volume = "6",
journal = "AIP Advances",
issn = "2158-3226",
publisher = "American Institute of Physics",
number = "2",

}

RIS

TY - JOUR

T1 - Qualitative insight and quantitative analysis of the effect of temperature on the coercivity of a magnetic system

AU - Moskalenko, Mariia

AU - Bessarab, Pavel F.

AU - Uzdin, Valery M.

AU - Jónsson, Hannes

N1 - Publisher Copyright: © 2016 Author(s). Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - The temperature dependence of the response of a magnetic system to an applied field can be understood qualitatively by considering variations in the energy surface characterizing the system and estimated quantitatively with rate theory. In the system analysed here, Fe/Sm-Co spring magnet, the width of the hysteresis loop is reduced to a half when temperature is raised from 25 K to 300 K. This narrowing can be explained and reproduced quantitatively without invoking temperature dependence of model parameters as has typically been done in previous data analysis. The applied magnetic field lowers the energy barrier for reorientation of the magnetization but thermal activation brings the system over the barrier. A 2-dimensional representation of the energy surface is developed and used to gain insight into the transition mechanism and to demonstrate how the applied field alters the transition path. Our results show the importance of explicitly including the effect of thermal activation when interpreting experiments involving the manipulation of magnetic systems at finite temperature.

AB - The temperature dependence of the response of a magnetic system to an applied field can be understood qualitatively by considering variations in the energy surface characterizing the system and estimated quantitatively with rate theory. In the system analysed here, Fe/Sm-Co spring magnet, the width of the hysteresis loop is reduced to a half when temperature is raised from 25 K to 300 K. This narrowing can be explained and reproduced quantitatively without invoking temperature dependence of model parameters as has typically been done in previous data analysis. The applied magnetic field lowers the energy barrier for reorientation of the magnetization but thermal activation brings the system over the barrier. A 2-dimensional representation of the energy surface is developed and used to gain insight into the transition mechanism and to demonstrate how the applied field alters the transition path. Our results show the importance of explicitly including the effect of thermal activation when interpreting experiments involving the manipulation of magnetic systems at finite temperature.

UR - http://www.scopus.com/inward/record.url?scp=84959010744&partnerID=8YFLogxK

U2 - 10.1063/1.4942428

DO - 10.1063/1.4942428

M3 - Article

VL - 6

JO - AIP Advances

JF - AIP Advances

SN - 2158-3226

IS - 2

M1 - 025213

ER -

ID: 7554874