Perpendicular recording heads for areal densities over 100 Gb/in/sup 2/

Abstract

Perpendicular recording with sufficient thermal stability has great potential for next-generation recording with areal densities over 100 Gb/in/sup 2/. One of the biggest problems for single-pole writers is head-induced erasure, such as erase-after-write This erasure is due to the high remanent magnetization of the main pole. We fabricated single-pole writers with a domain stabilization technique to reduce the remanence, and highly sensitive tunneling magnetoresistive (TMR) readers for 100 Gb/in/sup 2/ perpendicular recording.