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Eddy Current Effects on the High Density Magnetic Recording System

고밀도 자기기록 시스템에서 발생하는 와전류에 의한 자기 기록 필드 영향 분석

  • Won, Hyuk (Dept. of Electrical Engineering, Pusan Notional University) ;
  • Park, Gwan-Soo (Dept. of Electrical Engineering, Pusan Notional University)
  • 원혁 (전기공학과, 부산대학교) ;
  • 박관수 (전기공학과, 부산대학교)
  • Published : 2006.04.01

Abstract

The frequency of the recording current and the rotating speed of the recording media are Increase for the high densities in perpendicular magnetic recording system with high conductive pole tip head and soft magnetic under-layer. In the paper, the frequency Induced eddy current and velocity induced eddy currents are analyzed by non-linear 3-dimensional finite element analysis. It it turned out that the frequency induced eddy current decreases the amplitude of the recording fields, whereas the velocity induced eddy current only distorts the distribution of the recording fields in the recording media.

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