학술논문

Exchange tab stabilized readback transducers for areal densities exceeding 20 Gb/in/sup 2/
Document Type
Periodical
Source
IEEE Transactions on Magnetics IEEE Trans. Magn. Magnetics, IEEE Transactions on. 37(4):1727-1729 Jul, 2001
Subject
Fields, Waves and Electromagnetics
Transducers
Magnetic sensors
Permanent magnets
Magnetic heads
Magnetic films
Spin valves
Antiferromagnetic materials
Stress
Magnetic moments
Magnetic recording
Language
ISSN
0018-9464
1941-0069
Abstract
We present results from a high-density giant magnetoresistive magnetic recording reader using exchange bias stabilization. This novel reader design approach reduces the amount of parasitic resistance, as the sense current is not delivered through high resistivity permanent magnets. Heads were demonstrated to deliver areal densities in excess of 24 Gb/inch/sup 2/. The electrical performance of these heads, in particular, amplitude sensitivity, microtrack profiles and areal density capability are presented. Reader film properties and manufacturability of this approach are discussed in detail.