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

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3677

Lastpage

3679

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 V_rp, the second peak output voltage, and the resolution D₅₀ on the main pole thickness was measured and is discussed. It was found that V_rp 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42394

Filename

42394