Effect of Recording Density On the Reproducin Voltage in Perpendicular Magnetic Recording System

수직자기 기록장치에서 기록밀도가 재생전압에 미치는 영향

  • 박관수 (서울대학교 전기공학과) ;
  • 이향범 (서울대학교 전기공학과) ;
  • 한송엽 (서울대학교 전기공학과) ;
  • 이택동 (한국과학기술 연구원 기능금속 연구부) ;
  • 징평우 (한국과학기술 연구원 기능금속 연구부)
  • Published : 1991.11.01

Abstract

The method for analyzing the recording and reading process of magnetic recording system by numerical simulation is introduced. which can simulate the effect of elements of the magnetic recording system. During the whole simulation, hysteresis characteristics must be included. Preisach model and finite element method are used to construct the algorithm. From the wave of recording current, recorded pattern of magnetization in recording media is simulated in recording process, and then waveform of reading signal in head coil is obtained in reading process. To show the validity of this method, this is applied to perpendicular magnetic recording system. Waveform of recording signal and reproduced signal is obtained in several density. Pattern of reprocuced voltage magnitude according to increase of recording density shows roll-off curve.

Keywords