Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves

Abstract In this work we show that Surface Acoustic Waves (SAW) can induce a very large asymmetry in the magnetoresistance loop of an adjacent ferromagnetic nanostrip, making it look as if it had exchange bias. The Surface Acoustic Wave induces a DC voltage in the ferromagnetic nanostrip. For measur...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	David Castilla, Manuel Muñoz, Miguel Sinusía, Rocío Yanes, José L. Prieto
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fa4f17c32e464cb4b50a0b640a82c840
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:fa4f17c32e464cb4b50a0b640a82c840
record_format	dspace
spelling	oai:doaj.org-article:fa4f17c32e464cb4b50a0b640a82c8402021-12-02T18:27:48ZLarge asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves10.1038/s41598-021-88113-x2045-2322https://doaj.org/article/fa4f17c32e464cb4b50a0b640a82c8402021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88113-xhttps://doaj.org/toc/2045-2322Abstract In this work we show that Surface Acoustic Waves (SAW) can induce a very large asymmetry in the magnetoresistance loop of an adjacent ferromagnetic nanostrip, making it look as if it had exchange bias. The Surface Acoustic Wave induces a DC voltage in the ferromagnetic nanostrip. For measurements at constant current, this DC voltage makes the AMR loop asymmetric. In a series of different electrical experiments, we disentangle two different contributions to the induced DC voltage. One of them is independent on the external magnetic field and it is likely due to the acoustoelectric effect. A second contribution depends on the external magnetic field and it is a rectified voltage induced in the piezoelectric substrate as a response to the magnetization dynamics in the magnetostrictive nanostrip. The large asymmetry in the magnetoresistance loop reported in this work is a manifestation of an effective transfer of energy from the SAW to the magnetization dynamics, a mechanism that has been very recently appointed as a possible mean to harvest energy from a heat source.David CastillaManuel MuñozMiguel SinusíaRocío YanesJosé L. PrietoNature 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 David Castilla Manuel Muñoz Miguel Sinusía Rocío Yanes José L. Prieto Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves
description	Abstract In this work we show that Surface Acoustic Waves (SAW) can induce a very large asymmetry in the magnetoresistance loop of an adjacent ferromagnetic nanostrip, making it look as if it had exchange bias. The Surface Acoustic Wave induces a DC voltage in the ferromagnetic nanostrip. For measurements at constant current, this DC voltage makes the AMR loop asymmetric. In a series of different electrical experiments, we disentangle two different contributions to the induced DC voltage. One of them is independent on the external magnetic field and it is likely due to the acoustoelectric effect. A second contribution depends on the external magnetic field and it is a rectified voltage induced in the piezoelectric substrate as a response to the magnetization dynamics in the magnetostrictive nanostrip. The large asymmetry in the magnetoresistance loop reported in this work is a manifestation of an effective transfer of energy from the SAW to the magnetization dynamics, a mechanism that has been very recently appointed as a possible mean to harvest energy from a heat source.
format	article
author	David Castilla Manuel Muñoz Miguel Sinusía Rocío Yanes José L. Prieto
author_facet	David Castilla Manuel Muñoz Miguel Sinusía Rocío Yanes José L. Prieto
author_sort	David Castilla
title	Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves
title_short	Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves
title_full	Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves
title_fullStr	Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves
title_full_unstemmed	Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves
title_sort	large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by surface acoustic waves
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fa4f17c32e464cb4b50a0b640a82c840
work_keys_str_mv	AT davidcastilla largeasymmetryinthemagnetoresistanceloopsofferromagneticnanostripsinducedbysurfaceacousticwaves AT manuelmunoz largeasymmetryinthemagnetoresistanceloopsofferromagneticnanostripsinducedbysurfaceacousticwaves AT miguelsinusia largeasymmetryinthemagnetoresistanceloopsofferromagneticnanostripsinducedbysurfaceacousticwaves AT rocioyanes largeasymmetryinthemagnetoresistanceloopsofferromagneticnanostripsinducedbysurfaceacousticwaves AT joselprieto largeasymmetryinthemagnetoresistanceloopsofferromagneticnanostripsinducedbysurfaceacousticwaves
_version_	1718378075291385856

Large asymmetry in the magnetoresistance loops of ferromagnetic nanostrips induced by Surface Acoustic Waves

Ejemplares similares