Title :
An influence of the main pole magnetic characteristics and thickness on the write/read performance of the single pole type (SPT) head
Author :
Chang-An, Zuo ; Yang, Zheng
Author_Institution :
Res. Inst. of Magnetic Mater., Lanzhou Univ., Gansu, China
fDate :
9/1/1989 12:00:00 AM
Abstract :
The write/read performance of the single-pole-type (SPT) head for perpendicular magnetic recording was investigated. The main pole consisted of sputtered amorphous Co-Zr-Nb films with thicknesses of Tm=0.3-1.2 μm. The track width was 300 μm. The same flexible CoCr/NiFe double-layer medium was used for measuring the write/read performance of each SPT head. The dependence of the recording sensitivity, the readback output voltage Vrp, the second peak output voltage, and the resolution D50 on the main pole thickness was measured and is discussed. It was found that Vrp increased by 30% when the saturation flux density of the main pole film was increased from 10000 G to 14000 G
Keywords :
amorphous state; cobalt alloys; magnetic heads; magnetic recording; magnetic thin film devices; magnetic thin films; niobium alloys; sputtered coatings; zirconium alloys; 0.3 to 1.2 micron; 1×104 to 1.4×104 G; CoCr-NiFe recording medium; CoCr/NiFe double-layer medium; amorphous Co-Zr-Nb films; magnetic head; main pole magnetic characteristics; main pole thickness; perpendicular magnetic recording; readback output voltage; recording sensitivity; resolution; saturation flux density; second peak output voltage; single pole type; sputtered alloy films; write/read performance; Amorphous magnetic materials; Amorphous materials; Disk recording; Magnetic films; Magnetic flux; Magnetic heads; Perpendicular magnetic recording; Saturation magnetization; Thickness measurement; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
