摘要
从理论上分析了双层膜孤立垂直磁化ＭＲ头的读出过程。结果发现，若采用双层膜垂直磁记录介质与ＭＲ头相耦合使用，则可实现比单层膜垂直磁化介质记录更高的记录道密度。这有利于提高记录面密度。
According to the calculation from theoretical and experimental investigations,thereadback voltage of a MR head of the single-layer medium for perpendicular magnetic record-ing will be 1～2m V if 5 000～6 000 TPI of track density and 50～100 kbPI of bit density canbe realized.However,should the track density be further increased,the readback voltagewould be sharply decreased.To remedy such a situation,a perpendicular magnetic recordingsystem of the double-layer medium with a MR readout head is proposed. The readback pro-cess of isolated perpendicular magnctization by the double-layer medium with a MR head isdiscussed with the image method. In the calculation,the effect of the self-demagnetizingfield in the medium is neglected.Calculation results show that the readback voltage is higherwith the double-layer medium than that with the single-layer medium. Higher readout volt-age is favorable to further increase of the track density.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1995年第S2期22-26,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
关键词
垂直磁记录
高道密度
MR头
双层膜介质
erpendicular magnetic recording
high track density
MR head
double-layer medium
