Open AccessMicromagnetic simulation of thickness-dependent magnetization reversal processes in elongated iron nanodots
Author(s) -
Devika Sudsom,
Christoph Döpke,
Tomasz Błachowicz,
Andrea Ehrmann
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1391/1/012126
Subject(s) - nanodot , magnetization , condensed matter physics , micromagnetics , rectangle , materials science , magnetization reversal , ferromagnetism , magnetic field , field (mathematics) , magnetic anisotropy , physics , nanotechnology , geometry , mathematics , quantum mechanics , pure mathematics
Micromagnetic simulations were used to investigate magnetization reversal processes in elongated ferromagnetic nanodots, prepared by combining two half-circles with a rectangle. The micromagnetic simulation program OOMMF is based on dynamically solving the Landau-Lifshitz-Gilbert equation of motion. Material parameters were chosen as typical for Fe (iron). Lateral dimensions were in most simulations chosen as 730 nm x 133 nm, while the dot height was varied between 3 nm and 54 nm. For different in-plane angles of the external magnetic field, varying magnetization reversal processes were found with changing dot thickness, offering a possibility to tailor magnetic states by modifying the thickness of the nanodot.