Side track erasure of stitched-pole magnetic recording heads

Author

Guarisco, Davide ; Li, Monica Lin ; Lin, G. Herbert ; Back, Christian H. ; Acremann, Yves

Author_Institution

Adv. Technol., Maxtor Corp., Milpitas, CA, USA

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2527

Lastpage

2529

Abstract

We studied the side track erasure of a stitched-pole head with writer pole P3 not recessed from the air-bearing surface and compared it with conventional designs. A method is presented to determine the degree of side track erasure. We found that side track erasure increases with increasing linear density, medium M_rδ, and DC erase current. This is consistent with the erasure being caused by the stray field generated at the corners of the P2/P3 interface in combination with the demagnetization field present in the transitions. The high degree of magnetization of P3 in the stitched-pole head has been confirmed by magneto-optic Kerr microscopy

Keywords

Kerr magneto-optical effect; demagnetisation; hard discs; magnetic heads; DC erase current; demagnetization field; linear density; magneto-optic Kerr microscopy; side track erasure; stitched-pole magnetic recording heads; stray field; Demagnetization; Kerr effect; Magnetic field measurement; Magnetic force microscopy; Magnetic heads; Magnetic recording; Magnetization; Magnetooptic effects; Magnetooptic recording; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908494

Filename

908494