Title :
Taper effect in spin valve devices
Author :
Zhu, Ningjia ; Hiner, Craig ; Rana, Amritpal ; Huai, Yiming ; Seagle, Dave
Author_Institution :
Read-Rite Corp., Fremont, CA, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
In this paper the taper effect is discussed in various shielded spin valve structures using the micro-magnetic modeling. It is found that long taper can result in the instability of sensor performance. In addition, it is harder to control the instability if sensors have more than three magnetic layers because the demagnetizing fields become more complicated at sensor edges with increasing magnetic layer number
Keywords :
magnetic sensors; magnetic shielding; spin valves; demagnetizing field; instability; magnetic layer; micromagnetic model; permanent magnet hard bias field; shielded spin valve sensor; taper effect; Demagnetization; Equations; Geometry; Magnetic fields; Magnetic heads; Magnetic sensors; Magnetic separation; Magnetic shielding; Magnetization; Spin valves;
Journal_Title :
Magnetics, IEEE Transactions on
