Quantitative magnetic field measurements with the magnetic force microscope

Roger Proksch, George D. Skidmore, E. Dan Dahlberg, Sheryl Foss, J. J. Schmidt, Chris Merton, Brian Walsh, Matt Dugas

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

We have developed a technique to quantitatively image the magnetic field above a magnetic specimen using a modified magnetic force microscope (MFM). The technique depends on the nonlinear response of a magnetically soft MFM tip to the sample field and to an externally applied field, similar in principle to fluxgate magnetometry. We demonstrate the technique with high resolution, quantitative images of the magnetic field above a sample of longitudinal recording media. The magnetic field resolution is on the order of 1 Oe, with sub-100 nm spatial resolution comparable to standard MFM techniques.

Original languageEnglish (US)
Pages (from-to)2599-2601
Number of pages3
JournalApplied Physics Letters
Volume69
Issue number17
DOIs
StatePublished - Oct 21 1996

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