Measurement of the effects of the localized field of a magnetic force microscope tip on a 180° domain wall

Autor:	Roger Proksch, Bruce M. Moskowitz, Sheryl Foss, E. Dan Dahlberg
Rok vydání:	1997
Předmět:	chemistry.chemical_compound Domain wall (magnetism) Field (physics) Condensed matter physics Polarity (physics) Chemistry Perpendicular General Physics and Astronomy Magnetic force microscope Rate of decay Power law Magnetite
Zdroj:	Journal of Applied Physics. 81:5032-5034
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.364500
Popis:	Opposite polarity magnetic force microscope (MFM) profiles of domain walls (DWs) in magnetite were measured with a commercial MFM tip magnetized in opposite directions perpendicular to the sample surface. The influence of the tip field on a DW resulted in an overall more attractive interaction. The difference between opposite polarity DW profiles provided a qualitative measurement of the reversible changes in DW structure due to the localized field of the MFM tip. The dependence of the measured alteration on tip-sample separation was fit with a power law at different positions across the DW. The rate of decay of the alteration with tip-sample separation, quantified by the exponent of the power law fit, varied across the DW and was much slower than expected from a simple model.
Databáze:	OpenAIRE
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