Application of Fractal Analysis Methods for Lift Height Optimization in Magnetic Force Microscopy Measurements

• Published in: Archives of metallurgy and materials Vol. 63; no. 3; pp. 1109 - 1113
• Main Authors: Bramowicz, M, Kulesza, S, Chrostek, T, Senderowski, C
• Format: Journal Article
• Language: English
• Published: Warsaw Polish Academy of Sciences 01-01-2018
• Subjects: Fractal analysis; Fractal geometry; Fractals; lift height optimization; Magnetic fields; Magnetic force microscopy; Magnetic signals; Microscopy; Optimization; Side effects; Thermal noise
• ISSN: 1733-3490; 2300-1909
• DOI: 10.24425/123783

The paper presents results of a research on simulation of magnetic tip-surface interaction as a function of the lift height in the magnetic force microscopy. As expected, magnetic signal monotonically decays with increasing lift height, but the question arises, whether or not optimal lift height eventually exists. To estimate such a lift height simple procedure is proposed in the paper based on the minimization of the fractal dimension of the averaged profile of the MFM signal. In this case, the fractal dimension serves as a measure of distortion of a pure tip-surface magnetic coupling by various side effects, e.g. thermal noise and contribution of topographic features. Obtained simulation results apparently agree with experimental data.