Title :
Submicronwidth multitrack single pole head for ultra high density perpendicular magnetic recording
Author :
Jiang, Nianhua ; Muraoka, Hiroaki ; Nakamura, Yoshihisa
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
Submicronwidth multitrack single pole heads are presented. The novel head consists of three layers of thin film conductors sandwiching two main poles. The fields due to the current source in the parallel thin film conductor structure has been analyzed mathematically. This configuration can yield a strong and steep field gradient. The write performance of this head was measured with double-layered media. The recorded trackwidth was confirmed to be about 0.5 μm with magnetic force microscopy. There is no noticeable interference between the two tracks spaced nearly 1 μm apart. A track density of 50 kTPI has been achieved
Keywords :
magnetic force microscopy; magnetic heads; magnetic multilayers; magnetic recording; perpendicular magnetic recording; 0.5 micron; 1 micron; double-layered media; ferrite return yoke; hard disk; laminated conductors; magnetic force microscopy; parallel thin film conductor structure; sandwich layers; servoing; sliding contact recording; steep field gradient; submicron-width multitrack single pole head; three thin film conductor layers; track density; ultrahigh density perpendicular magnetic recording; write performance; Chromium; Conductive films; Conductors; Ferrites; Insulation life; Lithography; Magnetic heads; Perpendicular magnetic recording; Substrates; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
