Surface acoustic waves increase magnetic domain wall velocity

Surface acoustic waves increase magnetic domain wall velocity

Domain walls in magnetic thin films are being explored for memory applications and the speed at which they move has acquired increasing importance. Magnetic fields and currents have been shown to drive domain walls with speeds exceeding 500 m/s. We investigate another approach to increase domain wal...

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Bibliographic Details
Main Authors: A. Adhikari, S. Adenwalla
Format: Article
Language:English
Published: AIP Publishing LLC 2021-01-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/9.0000159
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spelling doaj-eba837e5d5674baf8eebfac4d73b07ea2021-02-02T21:32:45ZengAIP Publishing LLCAIP Advances2158-32262021-01-01111015234015234-510.1063/9.0000159Surface acoustic waves increase magnetic domain wall velocityA. Adhikari0S. Adenwalla1Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USADepartment of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USADomain walls in magnetic thin films are being explored for memory applications and the speed at which they move has acquired increasing importance. Magnetic fields and currents have been shown to drive domain walls with speeds exceeding 500 m/s. We investigate another approach to increase domain wall velocities, using high frequency surface acoustic waves to create standing strain waves in a 3 micron wide strip of magnetic film with perpendicular anisotropy. Our measurements, at a resonant frequency of 248.8 MHz, indicate that domain wall velocities increase substantially, even at relatively low applied voltages. Our findings suggest that the strain wave derived effective magnetic field acts as an additional driver for domain wall motion.http://dx.doi.org/10.1063/9.0000159
collection DOAJ
language English
format Article
sources DOAJ
author A. Adhikari
S. Adenwalla
spellingShingle A. Adhikari
S. Adenwalla
Surface acoustic waves increase magnetic domain wall velocity
AIP Advances
author_facet A. Adhikari
S. Adenwalla
author_sort A. Adhikari
title Surface acoustic waves increase magnetic domain wall velocity
title_short Surface acoustic waves increase magnetic domain wall velocity
title_full Surface acoustic waves increase magnetic domain wall velocity
title_fullStr Surface acoustic waves increase magnetic domain wall velocity
title_full_unstemmed Surface acoustic waves increase magnetic domain wall velocity
title_sort surface acoustic waves increase magnetic domain wall velocity
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2021-01-01
description Domain walls in magnetic thin films are being explored for memory applications and the speed at which they move has acquired increasing importance. Magnetic fields and currents have been shown to drive domain walls with speeds exceeding 500 m/s. We investigate another approach to increase domain wall velocities, using high frequency surface acoustic waves to create standing strain waves in a 3 micron wide strip of magnetic film with perpendicular anisotropy. Our measurements, at a resonant frequency of 248.8 MHz, indicate that domain wall velocities increase substantially, even at relatively low applied voltages. Our findings suggest that the strain wave derived effective magnetic field acts as an additional driver for domain wall motion.
url http://dx.doi.org/10.1063/9.0000159
work_keys_str_mv AT aadhikari surfaceacousticwavesincreasemagneticdomainwallvelocity
AT sadenwalla surfaceacousticwavesincreasemagneticdomainwallvelocity
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