Bulk uniaxial crystal stray field images modeling based on the magnetic force microscopy experimental data

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Magnetic Force Microscopy (MFM) is crucial for high-resolution stray field investigation of magnetic domain structures.
• Bulk uniaxial crystals with branched domain structures exhibit stray fields that vary significantly with distance from the surface.
• Achieving low tip-sample lift heights (z) is critical for MFM imaging of these structures.

Purpose of the Study:

• To develop and present an algorithm for processing experimental MFM images.
• To enable the modeling of magnetic domain structures at any lift height, including the surface (z=0).
• To provide new insights into domain structures for improved micromagnetic analysis.

Main Methods:

• Development of a novel image processing algorithm for MFM data.
• Modeling of magnetic stray fields and domain structures at various tip-sample lift heights.
• Calculation of tip-sample interaction forces and energies.

Main Results:

• The algorithm generates modeled MFM images at any lift height z, including z=0.
• New information regarding additional domains within the structure is revealed.
• Accurate estimation of domain structure parameters and enhanced micromagnetic analysis are facilitated.

Conclusions:

• The developed algorithm significantly enhances the analysis of magnetic domain structures using MFM.
• It allows for a more precise characterization of magnetic materials and their properties.
• The method supports detailed statistical analysis of structural complexity and micromagnetic behavior.