Dynamics of current induced magnetic superstructures in exchange-spring devices
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Dynamics of current induced magnetic superstructures in exchange-spring devices
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| Creator |
Kadigrobov, A.M.
Shekhter, R.I. Jonson, M. |
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| Subject |
Магнетизм
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| Description |
Thermoelectric manipulation of the magnetization of a magnetic layered stack in which a low-Curie temperature magnet is sandwiched between two strong magnets (exchange spring device) is considered. Controllable Joule heating produced by a current flowing in the plane of the magnetic stack (CIP configuration) induces a spatial magnetic and thermal structure along the current flow — a magnetothermal-electric domain (soliton). We show that such a structure can experience oscillatory in time dynamics if the magnetic stack is incorporated into an electric circuit in series with an inductor. The excitation of these magnetothermionic oscillations follow the scenario either of “soft” of “hard” instability: in the latter case oscillations arise if the initial perturbation is large enough. The frequency of the temporal oscillations is of the order of 10⁵–10⁷ s⁻¹ for current densities j ~ 10⁶ –10⁷ A/cm² . |
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| Date |
2017-05-21T16:55:49Z
2017-05-21T16:55:49Z 2012 |
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| Type |
Article
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| Identifier |
Dynamics of current induced magnetic superstructures
in exchange-spring devices / A.M. Kadigrobov, R.I. Shekhter, M. Jonson // Физика низких температур. — 2012. — Т. 38, № 7. — С. 793-800. — Бібліогр.: 32 назв. — англ.
0132-6414 PACS: 75.45.+j, 75.70.–i http://dspace.nbuv.gov.ua/handle/123456789/117264 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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