Layer-selective magnetization switching in the chirped photonic crystal with GdFeCo

Here we propose a magnetophotonic structure for the layer-selective magnetization switching with femtosecond laser pulses of different wavelengths. It is based on a chirped magnetophotonic crystal (MPC) containing magnetic GdFeCo and nonmagnetic dielectric layers. At each operating wavelength the la...

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Bibliographic Details
Published inScientific reports Vol. 11; no. 1; p. 2239
Main Authors Borovkova, O. V., Ignatyeva, D. O., Belotelov, V. I.
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 26.01.2021
Nature Publishing Group
Nature Portfolio
Subjects
639/766/400/1021
639/766/400/1101
Data storage
Humanities and Social Sciences
Information storage
Lasers
Light
Localization
multidisciplinary
Science
Science (multidisciplinary)
Wavelengths
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Summary:Here we propose a magnetophotonic structure for the layer-selective magnetization switching with femtosecond laser pulses of different wavelengths. It is based on a chirped magnetophotonic crystal (MPC) containing magnetic GdFeCo and nonmagnetic dielectric layers. At each operating wavelength the laser pulses heat up to necessary level only one GdFeCo layer that leads to its magnetization reversal without any impact on the magnetization of the other layers. Moreover, magneto-optical reading of the MPC magnetization state is discussed. Lateral dimensions of the considered MPC can be made small enough to operate as a unit cell for data storage.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-81887-0