Abstract
High linear recording density by combining a single‐pole magnetic head and Co‐Cr/Ni‐Fe double‐layer medium in a perpendicular magnetic recording hard disk drive is discussed. The present perpendicular magnetic recording system adopts a sliding contact head‐disk interface suitable for high‐density recording. A spacing as small as 30 nm between a head and a medium is obtained, measured by an optical interference method. Attaining such a small spacing promises superiority of the sliding contact head. An attempt is made to fabricate a composite head (= separate configuration of read/write head) to realize high resolution. This composite head is designed to maintain an important feature of saturation recording in the perpendicular magnetic recording scheme. A computer simulation analysis of the head‐disk interaction shows that a stronger interaction gives rise to a better resolution for a single‐pole head. In view of those results, heads and media with various Co‐Cr thicknesses are fabricated. A high D50 value of 170 kFRPI and a good overwrite performance better than ‐30 dB are demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 106-113 |
| Number of pages | 8 |
| Journal | Electronics and Communications in Japan (Part II: Electronics) |
| Volume | 76 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1993 Jan 1 |
Keywords
- Perpendicular magnetic recording
- head‐to‐medium magnetic interaction
- separated configuration of read/write head (= composite head)
- single‐pole head
- sliding contact
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Computer Networks and Communications
- Electrical and Electronic Engineering