A study of magnetization fluctuations in transition region using MFM image analysis

Author

Takekuma, I. ; Haseyama, M. ; Sueoka, K. ; Mukasa, K. ; Yasui, M.

Author_Institution

Graduate Sch. of Eng., Hokkaido Univ., Sapporo, Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

2685

Lastpage

2687

Abstract

This paper proposed a method for analysis of MFM (magnetic force microscopy) images. By using the proposed method, the influence of the magnetization fluctuations in transition regions can be analyzed. In the proposed method, the MFM images are processed as stochastic signals, and their stochastic parameters are obtained. The variance profile (the variance of MFM signals across the track direction), one of the parameters, is closely related to the magnetization fluctuations in the transition region. Therefore, by observation of the variance profile, the fluctuations can be quantitatively analyzed. An example of the analysis, which is based on the variance profile, is presented. From the analysis, it is found that the parameter L/W, which is introduced to characterize the variance profile, has the same trend as the S/N_m (N_m:medium noise) does

Keywords

magnetic force microscopy; magnetic recording noise; magnetisation; L/W parameter; image analysis; longitudinal recording; magnetic force microscopy; magnetization fluctuations; stochastic signal; transition region; variance profile; Analysis of variance; Fluctuations; Image analysis; Magnetic analysis; Magnetic force microscopy; Magnetic forces; Magnetization; Signal analysis; Signal processing; Stochastic processes;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800950

Filename

800950