Exchange bias effect in antiferromagnets containing ferromagnetic clusters

M. L. Pankratova, A. S. Kovalev

Research output: Contribution to journalArticle

Abstract

This study offers an explanation for the occurrence of magnetization exchange bias in antiferromagnets with ferromagnetic inclusions during pre-cooling the system in a magnetic field. The ferromagnetic (FM) subsystem ordered in this field at the Néel temperature leads to an inhomogeneous state of the antiferromagnetic (AFM) matrix with the finite mean effective field at the FM/AFM interface. This field causes exchange bias in the dependence M = M(H) during further remagnetization of the heterogeneous system. To describe the proposed scenario for such an effect, a simple model of a two-dimensional system with round inclusions of the FM phase was considered. Using numerical calculations and previously obtained analytical results, the study determines magnetization dependencies on the external field, which qualitatively explains the features of exchange bias in experimentally studied heterogeneous systems.

Original languageEnglish
Pages (from-to)1161-1167
Number of pages7
JournalLow Temperature Physics
Volume44
Issue number11
DOIs
Publication statusPublished - 30 Nov 2018

Fingerprint

magnetization
inclusions
occurrences
cooling
causes
matrices
magnetic fields
temperature

Bibliographical note

Copyright © 2018 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Exchange bias effect in antiferromagnets containing ferromagnetic clusters
M. L. Pankratova1 and A. S. Kovalev2,3,a)
Low Temperature Physics 2018 44:11, 1161-1167 and may be found at https://doi.org/10.1063/1.5060970


Funding: The project is funded by the European Commission
under Horizon 2020’s Marie Skłodowska-Curie Actions
scheme (Grant No. 645660).

Cite this

@article{a76b23983dbc466095a45429bc753a1e,
title = "Exchange bias effect in antiferromagnets containing ferromagnetic clusters",
abstract = "This study offers an explanation for the occurrence of magnetization exchange bias in antiferromagnets with ferromagnetic inclusions during pre-cooling the system in a magnetic field. The ferromagnetic (FM) subsystem ordered in this field at the N{\'e}el temperature leads to an inhomogeneous state of the antiferromagnetic (AFM) matrix with the finite mean effective field at the FM/AFM interface. This field causes exchange bias in the dependence M = M(H) during further remagnetization of the heterogeneous system. To describe the proposed scenario for such an effect, a simple model of a two-dimensional system with round inclusions of the FM phase was considered. Using numerical calculations and previously obtained analytical results, the study determines magnetization dependencies on the external field, which qualitatively explains the features of exchange bias in experimentally studied heterogeneous systems.",
author = "Pankratova, {M. L.} and Kovalev, {A. S.}",
note = "Copyright {\circledC} 2018 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Exchange bias effect in antiferromagnets containing ferromagnetic clusters M. L. Pankratova1 and A. S. Kovalev2,3,a) Low Temperature Physics 2018 44:11, 1161-1167 and may be found at https://doi.org/10.1063/1.5060970 Funding: The project is funded by the European Commission under Horizon 2020’s Marie Skłodowska-Curie Actions scheme (Grant No. 645660).",
year = "2018",
month = "11",
day = "30",
doi = "10.1063/1.5060970",
language = "English",
volume = "44",
pages = "1161--1167",
journal = "Low Temperature Physics",
issn = "1063-777X",
publisher = "American Institute of Physics Publising LLC",
number = "11",

}

Exchange bias effect in antiferromagnets containing ferromagnetic clusters. / Pankratova, M. L.; Kovalev, A. S.

In: Low Temperature Physics, Vol. 44, No. 11, 30.11.2018, p. 1161-1167.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Exchange bias effect in antiferromagnets containing ferromagnetic clusters

AU - Pankratova, M. L.

AU - Kovalev, A. S.

N1 - Copyright © 2018 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Exchange bias effect in antiferromagnets containing ferromagnetic clusters M. L. Pankratova1 and A. S. Kovalev2,3,a) Low Temperature Physics 2018 44:11, 1161-1167 and may be found at https://doi.org/10.1063/1.5060970 Funding: The project is funded by the European Commission under Horizon 2020’s Marie Skłodowska-Curie Actions scheme (Grant No. 645660).

PY - 2018/11/30

Y1 - 2018/11/30

N2 - This study offers an explanation for the occurrence of magnetization exchange bias in antiferromagnets with ferromagnetic inclusions during pre-cooling the system in a magnetic field. The ferromagnetic (FM) subsystem ordered in this field at the Néel temperature leads to an inhomogeneous state of the antiferromagnetic (AFM) matrix with the finite mean effective field at the FM/AFM interface. This field causes exchange bias in the dependence M = M(H) during further remagnetization of the heterogeneous system. To describe the proposed scenario for such an effect, a simple model of a two-dimensional system with round inclusions of the FM phase was considered. Using numerical calculations and previously obtained analytical results, the study determines magnetization dependencies on the external field, which qualitatively explains the features of exchange bias in experimentally studied heterogeneous systems.

AB - This study offers an explanation for the occurrence of magnetization exchange bias in antiferromagnets with ferromagnetic inclusions during pre-cooling the system in a magnetic field. The ferromagnetic (FM) subsystem ordered in this field at the Néel temperature leads to an inhomogeneous state of the antiferromagnetic (AFM) matrix with the finite mean effective field at the FM/AFM interface. This field causes exchange bias in the dependence M = M(H) during further remagnetization of the heterogeneous system. To describe the proposed scenario for such an effect, a simple model of a two-dimensional system with round inclusions of the FM phase was considered. Using numerical calculations and previously obtained analytical results, the study determines magnetization dependencies on the external field, which qualitatively explains the features of exchange bias in experimentally studied heterogeneous systems.

UR - http://www.scopus.com/inward/record.url?scp=85057831459&partnerID=8YFLogxK

U2 - 10.1063/1.5060970

DO - 10.1063/1.5060970

M3 - Article

VL - 44

SP - 1161

EP - 1167

JO - Low Temperature Physics

JF - Low Temperature Physics

SN - 1063-777X

IS - 11

ER -