Theory of magnetic force microscope images

A model is presented for magnetic force microscope (MFM) images obtained with a ferromagnetic tip and a ferromagnetic sample. Results of calculations are compared to recent MFM experiments and show good agreement using known values for magnetic parameters characterizing tip and sample. The model des...

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Veröffentlicht in:Applied physics letters 1990-03, Vol.56 (12), p.1181-1183
Hauptverfasser: ABRAHAM, D. W, MCDONALD, F. A
Format: Artikel
Sprache:eng
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Zusammenfassung:A model is presented for magnetic force microscope (MFM) images obtained with a ferromagnetic tip and a ferromagnetic sample. Results of calculations are compared to recent MFM experiments and show good agreement using known values for magnetic parameters characterizing tip and sample. The model describes a limit in resolution determined by the demagnetizing effect of tip and sample, predicts the appearance of a novel image artifact which is particularly observable in images of narrow domains of reversed magnetization, and suggests an explanation for the observed contrast between regions of opposite magnetization.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.102554