Application of the Autocorrelation Function and Fractal Geometry Methods for Analysis of MFM Images

Archives of Metallurgy and Materials

W. Maziarz¹  P. Czaja¹  S. Kulesza²  M. Bramowicz³ 

[1] INSTITUTE OF METALLURGY AND MATERIALS SCIENCE POLISH ACADEMY OF SCIENCE, REYMONTA 25, 30-059 KRAKÓW, POLAND;UNIVERSITY OF WARMIA AND MAZURY IN OLSZTYN, FACULTY OF MATHEMATICS AND COMPUTER SCIENCE, SLONECZNA 54, 10-710 OLSZTYN, POLAND;UNIVERSITY OF WARMIA AND MAZURY IN OLSZTYN, FACULTY OF TECHNICAL SCIENCES, OCZAPOWSKIEGO 11, 10-719 OLSZTYN, POLAND

关键词: Keywords: Atomic Force Microscopy;    Magnetic Force Microscopy;    magnetic domains;    fractal analysis;   

DOI  :  10.2478/amm-2014-0075

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Presented work is focused on the use of correlation methods for numerical analysis of magnetic stray field over the surface of materials. Obtained results extend our previous findings about application of the autocorrelation function and the fractal analysis for characterization of magnetic surfaces. Several domain images are recorded at various tip-sample gaps (i.e. the lift heights), and then their average widths were extrapolated down to the zero distance in order to estimate the width seen right on the surface. Apart from that, fractal parameters were derived from autocorrelation function, which turned out to be sensitive to the lift height, and might constitute universal measure (the critical lift height), above which the MFM signal became dominated by thermal noises and non-magnetic residual interactions.

【 授权许可】

Unknown