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Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays
Ferromagnetic antidot arrays have emerged as a system of tremendous interest due to their interesting spin configuration and dynamics as well as their potential applications in magnetic storage, memory, logic, communications and sensing devices. Here, we report experimental and numerical investigati...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5905244/ https://www.ncbi.nlm.nih.gov/pubmed/29719763 http://dx.doi.org/10.3762/bjnano.9.104 |
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author | De, Anulekha Mondal, Sucheta Sahoo, Sourav Barman, Saswati Otani, Yoshichika Mitra, Rajib Kumar Barman, Anjan |
author_facet | De, Anulekha Mondal, Sucheta Sahoo, Sourav Barman, Saswati Otani, Yoshichika Mitra, Rajib Kumar Barman, Anjan |
author_sort | De, Anulekha |
collection | PubMed |
description | Ferromagnetic antidot arrays have emerged as a system of tremendous interest due to their interesting spin configuration and dynamics as well as their potential applications in magnetic storage, memory, logic, communications and sensing devices. Here, we report experimental and numerical investigation of ultrafast magnetization dynamics in a new type of antidot lattice in the form of triangular-shaped Ni(80)Fe(20) antidots arranged in a hexagonal array. Time-resolved magneto-optical Kerr effect and micromagnetic simulations have been exploited to study the magnetization precession and spin-wave modes of the antidot lattice with varying lattice constant and in-plane orientation of the bias-magnetic field. A remarkable variation in the spin-wave modes with the orientation of in-plane bias magnetic field is found to be associated with the conversion of extended spin-wave modes to quantized ones and vice versa. The lattice constant also influences this variation in spin-wave spectra and spin-wave mode profiles. These observations are important for potential applications of the antidot lattices with triangular holes in future magnonic and spintronic devices. |
format | Online Article Text |
id | pubmed-5905244 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-59052442018-05-01 Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays De, Anulekha Mondal, Sucheta Sahoo, Sourav Barman, Saswati Otani, Yoshichika Mitra, Rajib Kumar Barman, Anjan Beilstein J Nanotechnol Full Research Paper Ferromagnetic antidot arrays have emerged as a system of tremendous interest due to their interesting spin configuration and dynamics as well as their potential applications in magnetic storage, memory, logic, communications and sensing devices. Here, we report experimental and numerical investigation of ultrafast magnetization dynamics in a new type of antidot lattice in the form of triangular-shaped Ni(80)Fe(20) antidots arranged in a hexagonal array. Time-resolved magneto-optical Kerr effect and micromagnetic simulations have been exploited to study the magnetization precession and spin-wave modes of the antidot lattice with varying lattice constant and in-plane orientation of the bias-magnetic field. A remarkable variation in the spin-wave modes with the orientation of in-plane bias magnetic field is found to be associated with the conversion of extended spin-wave modes to quantized ones and vice versa. The lattice constant also influences this variation in spin-wave spectra and spin-wave mode profiles. These observations are important for potential applications of the antidot lattices with triangular holes in future magnonic and spintronic devices. Beilstein-Institut 2018-04-09 /pmc/articles/PMC5905244/ /pubmed/29719763 http://dx.doi.org/10.3762/bjnano.9.104 Text en Copyright © 2018, De et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper De, Anulekha Mondal, Sucheta Sahoo, Sourav Barman, Saswati Otani, Yoshichika Mitra, Rajib Kumar Barman, Anjan Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
title | Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
title_full | Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
title_fullStr | Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
title_full_unstemmed | Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
title_short | Field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
title_sort | field-controlled ultrafast magnetization dynamics in two-dimensional nanoscale ferromagnetic antidot arrays |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5905244/ https://www.ncbi.nlm.nih.gov/pubmed/29719763 http://dx.doi.org/10.3762/bjnano.9.104 |
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