Тип публикации: статья из журнала
Год издания: 2022
Идентификатор DOI: 10.1016/j.physb.2021.413654
Ключевые слова: damping parameter, ferromagnetic resonance, netzelmann approach, patterned film, topography-induced anisotropy
Аннотация: Thin magnetic films with periodic surface topography are of special interest for microwave applications as their static and dynamic magnetic characteristics can be readily adjusted. In this paper, we explore the capabilities of a simple method for producing large-area periodically patterned films by creating regularly spaced grooveПоказать полностьюs on a substrate using a diamond cutter. For 110-nm-thick films, it was found that the substrate-topography-induced magnetic anisotropy was inversely proportional to the pattern period, which in experimental samples varied from 5 to 20 μm. Based on the Netzelmann theory, analytical expressions for demagnetization tensor components were obtained, which accord well with the experimental data. The measurements of the natural ferromagnetic resonance spectra demonstrated that the increase of the topography-induced magnetic anisotropy with the decrease of the pattern period led to the increase of the resonance frequency from 0.65 to 1.86 GHz, and to a decrease of the linewidth and effective damping parameter. © 2022 Elsevier B.V.
Журнал: Physica B: Condensed Matter
Выпуск журнала: Vol. 629
Номера страниц: 413654
ISSN журнала: 09214526
Издатель: Elsevier B.V.