Engineering Curvature-Induced Anisotropy in Thin Ferromagnetic Films

Oleg A Tretiakov, Massimiliano Morini, Sergiy Vasylkevych, Valeriy Slastikov

Research output: Contribution to journalArticle (Academic Journal)

6 Citations (Scopus)
254 Downloads (Pure)

Abstract

We investigate the effect of large curvature and dipolar energy in thin ferromagnetic films with periodically modulated top and bottom surfaces on magnetization behavior. We predict that the dipolar interaction and surface curvature can produce perpendicular anisotropy which can be controlled by engineering special types of periodic surface structures. Similar effects can be achieved by a significant surface roughness in the film. We demonstrate that, in general, the anisotropy can point in an arbitrary direction depending on the surface curvature. Furthermore, we provide simple examples of these periodic surface structures to show how to engineer particular anisotropies in thin films.

Original languageEnglish
Article number077203
Number of pages5
JournalPhysical Review Letters
Volume119
Issue number7
Early online date17 Aug 2017
DOIs
Publication statusPublished - 18 Aug 2017

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