Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias

Abstract In this work, the zero- field GHz frequency permeability spectra and the rotatable anisotropy of FeMn/FeNi bilayers are investigated. Omnidirectional zero-field ferromagnetic resonance (FMR) driven by rotatable anisotropy can be achieved in the FeMn/FeNi bilayers without exchange bias. Inst...

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Autores principales:	Wenfeng Wang, Guozhi Chai, Desheng Xue
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f4d862875e344570af8513001bc84602
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spelling	oai:doaj.org-article:f4d862875e344570af8513001bc846022021-12-02T12:32:33ZOmnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias10.1038/s41598-017-01639-x2045-2322https://doaj.org/article/f4d862875e344570af8513001bc846022017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01639-xhttps://doaj.org/toc/2045-2322Abstract In this work, the zero- field GHz frequency permeability spectra and the rotatable anisotropy of FeMn/FeNi bilayers are investigated. Omnidirectional zero-field ferromagnetic resonance (FMR) driven by rotatable anisotropy can be achieved in the FeMn/FeNi bilayers without exchange bias. Instead of uniaxial anisotropy and exchange bias field, it is the rotatable anisotropy field that dominates in the unbiased bilayer, due to the absence of the exchange bias. The quantitative analysis of exchange bias field, uniaxial anisotropy and rotatable anisotropy is discussed by comparing the dynamical and static magnetic properties of FeNi single layer, biased and unbiased FeMn/FeNi bilayers.Wenfeng WangGuozhi ChaiDesheng XueNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wenfeng Wang Guozhi Chai Desheng Xue Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias
description	Abstract In this work, the zero- field GHz frequency permeability spectra and the rotatable anisotropy of FeMn/FeNi bilayers are investigated. Omnidirectional zero-field ferromagnetic resonance (FMR) driven by rotatable anisotropy can be achieved in the FeMn/FeNi bilayers without exchange bias. Instead of uniaxial anisotropy and exchange bias field, it is the rotatable anisotropy field that dominates in the unbiased bilayer, due to the absence of the exchange bias. The quantitative analysis of exchange bias field, uniaxial anisotropy and rotatable anisotropy is discussed by comparing the dynamical and static magnetic properties of FeNi single layer, biased and unbiased FeMn/FeNi bilayers.
format	article
author	Wenfeng Wang Guozhi Chai Desheng Xue
author_facet	Wenfeng Wang Guozhi Chai Desheng Xue
author_sort	Wenfeng Wang
title	Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias
title_short	Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias
title_full	Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias
title_fullStr	Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias
title_full_unstemmed	Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias
title_sort	omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in feni/femn bilayers without exchange bias
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f4d862875e344570af8513001bc84602
work_keys_str_mv	AT wenfengwang omnidirectionalzerofieldferromagneticresonancedrivenbyrotatableanisotropyinfenifemnbilayerswithoutexchangebias AT guozhichai omnidirectionalzerofieldferromagneticresonancedrivenbyrotatableanisotropyinfenifemnbilayerswithoutexchangebias AT deshengxue omnidirectionalzerofieldferromagneticresonancedrivenbyrotatableanisotropyinfenifemnbilayerswithoutexchangebias
_version_	1718394073536004096

Omnidirectional zero-field ferromagnetic resonance driven by rotatable anisotropy in FeNi/FeMn bilayers without exchange bias

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