najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-3-332-339najo-63Research ArticlePHYSICSФИЗИКАStability and transformations of domain walls in cylindrical wiresСтабильность и трансформации доменных границ в цилиндрических проводахhttps://orcid.org/0000-0002-6921-6075ЧичайК. А.ChichayK. A.

Ксения А. Чичай

физический факультет

197101; Санкт-Петербург

Ksenia A. Chichay

Department of Physics

197101; St. Petersburg

ks.chichay@gmail.comhttps://orcid.org/0000-0001-8789-3267ЛобановИ. С.LobanovI. S.

Игорь С. Лобанов

физический факультет

197101; Санкт-Петербург

Igor S. Lobanov

Department of Physics

197101; St. Petersburg

lobanov.igor@gmail.comhttps://orcid.org/0000-0002-9505-0996УздинВ. М.UzdinV. M.

Валерий М. Уздин

физический факультет

197101; Санкт-Петербург

Valery M. Uzdin

Department of Physics

197101; St. Petersburg

v.uzdin@mail.ruУниверситет ИТМОITMO University202401062025153332339Copyright © Chichay K.A., Lobanov I.S., Uzdin V.M., 20252025Чичай К.А., Лобанов И.С., Уздин В.М.Chichay K.A., Lobanov I.S., Uzdin V.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/63

   For magnetic wires and other systems with cylindrical symmetry, algorithms have been proposed for constructing a multidimensional energy surface, searching for minimal energy paths between locally stable states and the activation energies of transitions between such states. The mechanisms of nucleation and transformation of domain walls of various types in amorphous ferromagnetic nanowires with a nonuniform anisotropy distribution have been studied. The stability of the domain walls structure with respect to thermal fluctuations and random external perturbations has been assessed.

   Предложены алгоритмы построения многомерной энергетической поверхности, поиска путей с минимальным перепадом энергии между локально устойчивыми состояниями и энергий активации переходов между такими состояниями для магнитных проводов и других систем с цилиндрической симметрией. Изучены механизмы зарождения и трансформации доменных границ различного типа в аморфных ферромагнитных нанопроводах с неоднородным распределением анизотропии. Оценена устойчивость структуры доменных стенок по отношению к тепловым флуктуациям и случайным внешним возмущениям.

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The authors declare that there are no conflicts of interest present.