Vortex polarity switching in magnets with surface anisotropy
Vortex core reversal in magnetic particle is essentially influenced by a surface anisotropy. Under the action of a perpendicular static magnetic field the vortex core undergoes a shape deformation of pillow- or barrel-shaped type, depending on the type of the surface anisotropy. This deformation pla...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2015 |
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2015
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| Теми: | |
| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/122071 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Vortex polarity switching in magnets with surface anisotropy / O.V. Pylypovskyi, D.D. Sheka, V.P. Kravchuk, Y. Gaididei // Физика низких температур. — 2015. — Т. 41, № 5. — С. 466-481. — Бібліогр.: 74 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862717378269282304 |
|---|---|
| author | Pylypovskyi, O.V. Sheka, D.D. Kravchuk, V.P. Gaididei, Y. |
| author_facet | Pylypovskyi, O.V. Sheka, D.D. Kravchuk, V.P. Gaididei, Y. |
| citation_txt | Vortex polarity switching in magnets with surface anisotropy / O.V. Pylypovskyi, D.D. Sheka, V.P. Kravchuk, Y. Gaididei // Физика низких температур. — 2015. — Т. 41, № 5. — С. 466-481. — Бібліогр.: 74 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Vortex core reversal in magnetic particle is essentially influenced by a surface anisotropy. Under the action of a perpendicular static magnetic field the vortex core undergoes a shape deformation of pillow- or barrel-shaped type, depending on the type of the surface anisotropy. This deformation plays a key point in the switching mechanism: We predict that the vortex polarity switching is accompanied (i) by a linear singularity in case of Heisenberg magnet with bulk anisotropy only and (ii) by a point singularities in case of surface anisotropy or exchange anisotropy. We study in details the switching process using spin-lattice simulations and propose a simple analytical description using a wired core model, which provides an adequate description of the Bloch point statics, its dynamics and the Bloch point mediated switching process. Our analytical predictions are confirmed by spin-lattice simulations for Heisenberg magnet and micromagnetic simulations for nanomagnet with account of a dipolar interaction.
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| first_indexed | 2025-12-07T18:10:25Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-122071 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T18:10:25Z |
| publishDate | 2015 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Pylypovskyi, O.V. Sheka, D.D. Kravchuk, V.P. Gaididei, Y. 2017-06-26T16:21:03Z 2017-06-26T16:21:03Z 2015 Vortex polarity switching in magnets with surface anisotropy / O.V. Pylypovskyi, D.D. Sheka, V.P. Kravchuk, Y. Gaididei // Физика низких температур. — 2015. — Т. 41, № 5. — С. 466-481. — Бібліогр.: 74 назв. — англ. 0132-6414 PACS: 75.10.Hk, 05.45.–a, 75.70.Rf, 75.75.–c, 75.78.–n https://nasplib.isofts.kiev.ua/handle/123456789/122071 Vortex core reversal in magnetic particle is essentially influenced by a surface anisotropy. Under the action of a perpendicular static magnetic field the vortex core undergoes a shape deformation of pillow- or barrel-shaped type, depending on the type of the surface anisotropy. This deformation plays a key point in the switching mechanism: We predict that the vortex polarity switching is accompanied (i) by a linear singularity in case of Heisenberg magnet with bulk anisotropy only and (ii) by a point singularities in case of surface anisotropy or exchange anisotropy. We study in details the switching process using spin-lattice simulations and propose a simple analytical description using a wired core model, which provides an adequate description of the Bloch point statics, its dynamics and the Bloch point mediated switching process. Our analytical predictions are confirmed by spin-lattice simulations for Heisenberg magnet and micromagnetic simulations for nanomagnet with account of a dipolar interaction. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур К 70-летию со дня рождения В. М. Локтева Vortex polarity switching in magnets with surface anisotropy Article published earlier |
| spellingShingle | Vortex polarity switching in magnets with surface anisotropy Pylypovskyi, O.V. Sheka, D.D. Kravchuk, V.P. Gaididei, Y. К 70-летию со дня рождения В. М. Локтева |
| title | Vortex polarity switching in magnets with surface anisotropy |
| title_full | Vortex polarity switching in magnets with surface anisotropy |
| title_fullStr | Vortex polarity switching in magnets with surface anisotropy |
| title_full_unstemmed | Vortex polarity switching in magnets with surface anisotropy |
| title_short | Vortex polarity switching in magnets with surface anisotropy |
| title_sort | vortex polarity switching in magnets with surface anisotropy |
| topic | К 70-летию со дня рождения В. М. Локтева |
| topic_facet | К 70-летию со дня рождения В. М. Локтева |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/122071 |
| work_keys_str_mv | AT pylypovskyiov vortexpolarityswitchinginmagnetswithsurfaceanisotropy AT shekadd vortexpolarityswitchinginmagnetswithsurfaceanisotropy AT kravchukvp vortexpolarityswitchinginmagnetswithsurfaceanisotropy AT gaidideiy vortexpolarityswitchinginmagnetswithsurfaceanisotropy |