Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field

Magnetization switching of high-anisotropy nanomagnets by a small magnetic field is a key challenge in developing future magnetic nanodevices. In this paper, we experimentally demonstrate magnetization switching of a perpendicularly magnetized nanomagnet induced solely by an in-plane circularly pola...

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Autores principales: Suto, Hirofumi, Kanao, Taro, Nagasawa, Tazumi, Mizushima, Koichi, Sato, Rie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653824/
https://www.ncbi.nlm.nih.gov/pubmed/29062008
http://dx.doi.org/10.1038/s41598-017-13770-w
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author Suto, Hirofumi
Kanao, Taro
Nagasawa, Tazumi
Mizushima, Koichi
Sato, Rie
author_facet Suto, Hirofumi
Kanao, Taro
Nagasawa, Tazumi
Mizushima, Koichi
Sato, Rie
author_sort Suto, Hirofumi
collection PubMed
description Magnetization switching of high-anisotropy nanomagnets by a small magnetic field is a key challenge in developing future magnetic nanodevices. In this paper, we experimentally demonstrate magnetization switching of a perpendicularly magnetized nanomagnet induced solely by an in-plane circularly polarized microwave magnetic field. Applying a microwave field with an amplitude below 5% of the anisotropy field induces large ferromagnetic resonance excitation, which results in magnetization switching even in the absence of a dc field. This kind of magnetization switching is induced by a microwave field with a duration of 0.5 ns and is clearly dependent on the rotation direction of the microwave field.
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spelling pubmed-56538242017-11-08 Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field Suto, Hirofumi Kanao, Taro Nagasawa, Tazumi Mizushima, Koichi Sato, Rie Sci Rep Article Magnetization switching of high-anisotropy nanomagnets by a small magnetic field is a key challenge in developing future magnetic nanodevices. In this paper, we experimentally demonstrate magnetization switching of a perpendicularly magnetized nanomagnet induced solely by an in-plane circularly polarized microwave magnetic field. Applying a microwave field with an amplitude below 5% of the anisotropy field induces large ferromagnetic resonance excitation, which results in magnetization switching even in the absence of a dc field. This kind of magnetization switching is induced by a microwave field with a duration of 0.5 ns and is clearly dependent on the rotation direction of the microwave field. Nature Publishing Group UK 2017-10-23 /pmc/articles/PMC5653824/ /pubmed/29062008 http://dx.doi.org/10.1038/s41598-017-13770-w Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Suto, Hirofumi
Kanao, Taro
Nagasawa, Tazumi
Mizushima, Koichi
Sato, Rie
Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
title Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
title_full Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
title_fullStr Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
title_full_unstemmed Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
title_short Zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
title_sort zero-dc-field rotation-direction-dependent magnetization switching induced by a circularly polarized microwave magnetic field
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5653824/
https://www.ncbi.nlm.nih.gov/pubmed/29062008
http://dx.doi.org/10.1038/s41598-017-13770-w
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