Principle of magnetic field analysis by MFM signal transformation and its application to magnetic recording media

Author

Saito, Hitoshi ; Chen, Jin ; Ishio, Shunji

Author_Institution

Dept. of Mater. Sci. & Eng., Akita Univ., Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

3992

Lastpage

3994

Abstract

MFM signal transformation principle from MFM signals to magnetic fields at a sample surface was clarified by considering MFM tip Green´s functions. The transformation principle was applied to MFM line profiles for perpendicular magnetic recording media. It was found that the tip-sample distance during MFM measurement could be roughly estimated and the commercial magnetic coated MFM tip behaved as a monopole tip by the transformation procedure. Using the above results, the magnetic field analysis at the sample surface was demonstrated by MFM signal transformation

Keywords

Green´s function methods; magnetic field measurement; magnetic force microscopy; perpendicular magnetic recording; Green´s functions; MFM signal transformation; MFM tip; line profiles; magnetic field analysis; magnetic recording media; monopole tip; perpendicular magnetic recording media; tip-sample distance; Magnetic analysis; Magnetic fields; Magnetic force microscopy; Magnetic forces; Magnetic recording; Magnetization; Materials science and technology; Perpendicular magnetic recording; Signal analysis; Signal resolution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800732

Filename

800732