Modeling the spatial resolution of magnetic solitons in magnetic force microscopy and the effect on their sizes.

ABSTRACT: In this work, we explored theoretically the spatial resolution of magnetic solitons and the variations of their sizes when subjected to a magnetic force microscopy (MFM) measurement. Next to tip-sample separation, we considered reversal in the magnetization direction of the tip, showing that the magnetic soliton size measurement can be strongly affected by the magnetization direction of the tip. In addition to previous studies that only consider thermal fluctuations, we developed a theoretical method to obtain the minimum observable length of a magnetic soliton and its length variation due to the influence of the MFM tip by minimizing the soliton's magnetic energy. We show that a simple spherical model for the MFM tip can capture most of the physics underlying tip-sample interactions, with

SUBMITTER: Castro I 

PROVIDER: S-EPMC11978781 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature