Normal modes for the vortex state magnetic dots
Submicron permalloy magnetic dots have a vortex ground state, and application of an in-plane magnetic pulse will result in precession of the vortex about the dot axis at a frequency in the sub GHz range. The precession frequency of this mode is calculated using a perturbation technique based on vort...
Збережено в:
| Дата: | 2004 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2004
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| Назва видання: | Functional Materials |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/139472 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Normal modes for the vortex state magnetic dots / C.E. Zaspel, B.A. Ivanov // Functional Materials. — 2004. — Т. 11, № 3. — С. 556-559. — Бібліогр.: 8 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Submicron permalloy magnetic dots have a vortex ground state, and application of an in-plane magnetic pulse will result in precession of the vortex about the dot axis at a frequency in the sub GHz range. The precession frequency of this mode is calculated using a perturbation technique based on vortex-magnon scattering including the magnetostatic interaction. These calculations show that the frequencies vary between 0.2 and 0.8 GHz for 60 nm disks or radii between 250 and 1000 nm, which agrees with recent experimental data. There is also a higher frequency mode between 5 and 7 GHz. |
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