Magnetization-induced shape transformations in flexible ferromagnetic rings

dc.contributor.authorGaididei, Yuri
dc.contributor.authorYershov, Kostiantyn
dc.contributor.authorSheka, Denis
dc.contributor.authorKravchuk, Volodymyr
dc.contributor.authorSaxena, Avadh
dc.date.accessioned2021-01-26T19:26:17Z
dc.date.available2021-01-26T19:26:17Z
dc.date.issued2019
dc.description.abstractFlexible ferromagnetic rings are spin-chain magnets, in which the magnetic and mechanical subsystems are coupled. The coupling is achieved through the tangentially oriented anisotropy axis. The possibility to operate the mechanics of the nanomagnets by controlling their magnetization is an important issue for the nanorobotics applications. A minimal model for the deformable curved anisotropic Heisenberg ferromagnetic wire is proposed. An equilibrium phase diagram is constructed for the closed loop geometry: (i) A vortex state with vanishing total magnetic moment is typical for relatively large systems; in this case, the wire has the form of a regular circle. (ii) A topologically trivial onion state with the planar magnetization distribution is realized in small enough systems; magnetic loop is elliptically deformed. By varying geometrical and elastic parameters, a phase transition between the vortex and onion states takes place. The detailed analytical description of the phase diagram is well confirmed by numerical simulations.en_US
dc.identifier.citationMagnetization-induced shape transformations in flexible ferromagnetic rings [electronic resource] / Gaididei Y., Yershov K. V., Sheka D. D., Kravchuk V. P., Saxena A. // Physical Review B. - 2019. - Vol. 99, Issue 1. - Article number 014404.en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevB.99.014404
dc.identifier.urihttps://ekmair.ukma.edu.ua/handle/123456789/19332
dc.language.isoenuk_UA
dc.relation.sourcePhysical Review B.en_US
dc.statusfirst publisheduk_UA
dc.subjectflexible ferromagnetic ringsen_US
dc.subjectmagnetizationen_US
dc.subjectnanorobotsen_US
dc.subjectarticleen_US
dc.titleMagnetization-induced shape transformations in flexible ferromagnetic ringsen_US
dc.typeArticleuk_UA
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