Anisotropy engineering using exchange bias on antidot templates

Anisotropy engineering using exchange bias on antidot templates

We explore an emerging device concept based on exchange bias used in conjunction with an antidot geometry to fine tune ferromagnetic resonances. Planar cavity ferromagnetic resonance is used to study the microwave response of NiO/NiFe bilayers with antidot structuring. A large frequency asymmetry wi...

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Main Authors: F. J. T. Goncalves, R. D. Desautels, S. Su, T. Drysdale, J. van Lierop, K.-W. Lin, D. S. Schmool, R. L. Stamps
Format: Article
Language:English
Published: AIP Publishing LLC 2015-06-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4922055
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spelling doaj-0747b7f34d0b4b09b7a823b74e08bcfa2020-11-24T22:58:27ZengAIP Publishing LLCAIP Advances2158-32262015-06-0156067101067101-710.1063/1.4922055001506ADVAnisotropy engineering using exchange bias on antidot templatesF. J. T. Goncalves0R. D. Desautels1S. Su2T. Drysdale3J. van Lierop4K.-W. Lin5D. S. Schmool6R. L. Stamps7SUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UKDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, R3T 2N2, CanadaDepartment of Materials Science and Engineering, National Chung Hsing University, Taichung 402, TaiwanDepartment of Engineering, University of Glasgow, Glasgow G12 8QQ, UKDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, R3T 2N2, CanadaDepartment of Materials Science and Engineering, National Chung Hsing University, Taichung 402, TaiwanLab. PROMES CNRS (UPR8521), Université de Perpignan Via Domitia, 66100 Perpignan, FranceSUPA, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UKWe explore an emerging device concept based on exchange bias used in conjunction with an antidot geometry to fine tune ferromagnetic resonances. Planar cavity ferromagnetic resonance is used to study the microwave response of NiO/NiFe bilayers with antidot structuring. A large frequency asymmetry with respect to an applied magnetic field is found across a broad field range whose underlying cause is linked to the distribution of magnetic poles at the antidot surfaces. This distribution is found to be particularly sensitive to the effects of exchange bias, and robust in regards to the quality of the antidot geometry. The template based antidot geometry we study offers advantages for practical device construction, and we show that it is suitable for broadband absorption and filtering applications, allowing tunable anisotropies via interface engineering.http://dx.doi.org/10.1063/1.4922055
collection DOAJ
language English
format Article
sources DOAJ
author F. J. T. Goncalves
R. D. Desautels
S. Su
T. Drysdale
J. van Lierop
K.-W. Lin
D. S. Schmool
R. L. Stamps
spellingShingle F. J. T. Goncalves
R. D. Desautels
S. Su
T. Drysdale
J. van Lierop
K.-W. Lin
D. S. Schmool
R. L. Stamps
Anisotropy engineering using exchange bias on antidot templates
AIP Advances
author_facet F. J. T. Goncalves
R. D. Desautels
S. Su
T. Drysdale
J. van Lierop
K.-W. Lin
D. S. Schmool
R. L. Stamps
author_sort F. J. T. Goncalves
title Anisotropy engineering using exchange bias on antidot templates
title_short Anisotropy engineering using exchange bias on antidot templates
title_full Anisotropy engineering using exchange bias on antidot templates
title_fullStr Anisotropy engineering using exchange bias on antidot templates
title_full_unstemmed Anisotropy engineering using exchange bias on antidot templates
title_sort anisotropy engineering using exchange bias on antidot templates
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2015-06-01
description We explore an emerging device concept based on exchange bias used in conjunction with an antidot geometry to fine tune ferromagnetic resonances. Planar cavity ferromagnetic resonance is used to study the microwave response of NiO/NiFe bilayers with antidot structuring. A large frequency asymmetry with respect to an applied magnetic field is found across a broad field range whose underlying cause is linked to the distribution of magnetic poles at the antidot surfaces. This distribution is found to be particularly sensitive to the effects of exchange bias, and robust in regards to the quality of the antidot geometry. The template based antidot geometry we study offers advantages for practical device construction, and we show that it is suitable for broadband absorption and filtering applications, allowing tunable anisotropies via interface engineering.
url http://dx.doi.org/10.1063/1.4922055
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