Тип публикации: статья из журнала
Год издания: 2011
Идентификатор DOI: 10.1140/epjb/e2011-20137-7
Ключевые слова: Domain-wall pinning, Ferromagnets, Inhomogeneities, Initial susceptibility, Magnetization curves, Non-Gaussian, One-dimensional chains, Quasi-static displacement, Spatial fluctuation, Distribution functions, Nanowires, Random processes, Domain walls
Аннотация: The process of quasistatic displacement of domain walls is considered in a nanowire represented as a one-dimensional chain of ferromagnet crystallites. The domain wall pinning due to spatial fluctuations of the anisotropy axes is analyzed. Based on the theory of overshoots of random processes, we have calculated the distribution fuПоказать полностьюnctions of the initial susceptibility and of the maximal force of interaction of the domain wall with inhomogeneities. These functions are found to be non-Gaussian. We have derived expressions for the magnetization curve and the coercive force, which depend on the length of the chain.
Журнал: EUROPEAN PHYSICAL JOURNAL B
Выпуск журнала: Vol. 83, Is. 1
Номера страниц: 83-91
ISSN журнала: 14346028
Место издания: NEW YORK
Издатель: SPRINGER