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Dynamics of current induced magnetic superstructures in exchange-spring devices

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dc.contributor.author Kadigrobov, A.M.
dc.contributor.author Shekhter, R.I.
dc.contributor.author Jonson, M.
dc.date.accessioned 2017-05-21T16:55:49Z
dc.date.available 2017-05-21T16:55:49Z
dc.date.issued 2012
dc.identifier.citation 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. uk_UA
dc.identifier.issn 0132-6414
dc.identifier.other PACS: 75.45.+j, 75.70.–i
dc.identifier.uri http://dspace.nbuv.gov.ua/handle/123456789/117264
dc.description.abstract 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 . uk_UA
dc.description.sponsorship Financial support from the EC (FP7-ICT-FET Proj. No. 225955 STELE), the Swedish VR, and the Korean WCU program funded by MEST/NFR (R31-2008-000-10057-0) is gratefully acknowledged. uk_UA
dc.language.iso en uk_UA
dc.publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України uk_UA
dc.relation.ispartof Физика низких температур
dc.subject Магнетизм uk_UA
dc.title Dynamics of current induced magnetic superstructures in exchange-spring devices uk_UA
dc.type Article uk_UA
dc.status published earlier uk_UA

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