Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films

Abstract Here it is investigated the effect of the antiferromagnet Cr2O3 on the magnetic properties of ferromagnetic Fe72Ga28 thin films. Sputtered Fe72Ga28 layers have their magnetization in the sample plane with a magnetic fluctuation that gives rise to magnetic ripple. In order to turn its magnet...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	I. Hontecillas, M. Maicas, J. P. Andrés, R. Ranchal
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a37d40d99da644a6b299b5ef20185788
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a37d40d99da644a6b299b5ef20185788
record_format	dspace
spelling	oai:doaj.org-article:a37d40d99da644a6b299b5ef201857882021-12-02T14:34:02ZInterfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films10.1038/s41598-021-92640-y2045-2322https://doaj.org/article/a37d40d99da644a6b299b5ef201857882021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92640-yhttps://doaj.org/toc/2045-2322Abstract Here it is investigated the effect of the antiferromagnet Cr2O3 on the magnetic properties of ferromagnetic Fe72Ga28 thin films. Sputtered Fe72Ga28 layers have their magnetization in the sample plane with a magnetic fluctuation that gives rise to magnetic ripple. In order to turn its magnetization into the out of plane (OOP) direction, it has been magnetically coupled with Cr2O3 that has magnetic moments along the c-axis, that is the perpendicular direction when properly aligned. Cr2O3 has been obtained from Cr oxidation, whereas Fe72Ga28 has been deposited on top of it by sputtering in the ballistic regime. Although a uniaxial in-plane magnetic anisotropy is expected for Fe72Ga28 thickness above 100 nm, the interfacial coupling with Cr2O3 prevents this anisotropy. The formation of stripe domains in Fe72Ga28 above a critical thickness reveals the enhancement of the out of plane component of the Fe72Ga28 magnetization with respect to uncoupled layers. Due to the interface coupling, the Fe72Ga28 magnetization turns into the out-of-plane direction as its thickness is gradually reduced, and a perpendicular magnetic anisotropy of 3·106 erg·cm−3 is inferred from experimental results. Eventually, the coupling between Cr2O3 and Fe72Ga28 promotes an exchange-bias effect that has been well fitted by means of the random field model.I. HontecillasM. MaicasJ. P. AndrésR. RanchalNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q I. Hontecillas M. Maicas J. P. Andrés R. Ranchal Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films
description	Abstract Here it is investigated the effect of the antiferromagnet Cr2O3 on the magnetic properties of ferromagnetic Fe72Ga28 thin films. Sputtered Fe72Ga28 layers have their magnetization in the sample plane with a magnetic fluctuation that gives rise to magnetic ripple. In order to turn its magnetization into the out of plane (OOP) direction, it has been magnetically coupled with Cr2O3 that has magnetic moments along the c-axis, that is the perpendicular direction when properly aligned. Cr2O3 has been obtained from Cr oxidation, whereas Fe72Ga28 has been deposited on top of it by sputtering in the ballistic regime. Although a uniaxial in-plane magnetic anisotropy is expected for Fe72Ga28 thickness above 100 nm, the interfacial coupling with Cr2O3 prevents this anisotropy. The formation of stripe domains in Fe72Ga28 above a critical thickness reveals the enhancement of the out of plane component of the Fe72Ga28 magnetization with respect to uncoupled layers. Due to the interface coupling, the Fe72Ga28 magnetization turns into the out-of-plane direction as its thickness is gradually reduced, and a perpendicular magnetic anisotropy of 3·106 erg·cm−3 is inferred from experimental results. Eventually, the coupling between Cr2O3 and Fe72Ga28 promotes an exchange-bias effect that has been well fitted by means of the random field model.
format	article
author	I. Hontecillas M. Maicas J. P. Andrés R. Ranchal
author_facet	I. Hontecillas M. Maicas J. P. Andrés R. Ranchal
author_sort	I. Hontecillas
title	Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films
title_short	Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films
title_full	Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films
title_fullStr	Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films
title_full_unstemmed	Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films
title_sort	interfacial coupling effect of cr2o3 on the magnetic properties of fe72ga28 thin films
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/a37d40d99da644a6b299b5ef20185788
work_keys_str_mv	AT ihontecillas interfacialcouplingeffectofcr2o3onthemagneticpropertiesoffe72ga28thinfilms AT mmaicas interfacialcouplingeffectofcr2o3onthemagneticpropertiesoffe72ga28thinfilms AT jpandres interfacialcouplingeffectofcr2o3onthemagneticpropertiesoffe72ga28thinfilms AT rranchal interfacialcouplingeffectofcr2o3onthemagneticpropertiesoffe72ga28thinfilms
_version_	1718391148474531840

Interfacial coupling effect of Cr2O3 on the magnetic properties of Fe72Ga28 thin films

Ejemplares similares