Title :
Keepered media reproduction with dual MR heads
Author :
Wang, Frank Z. ; He, Lian N. ; Mapps, Desmond J. ; Wilton, David T. ; Clegg, Warwick W ; Robinson, Paul
Author_Institution :
Sch. of Electron., Commun. & Electr. Eng., Plymouth Univ., UK
fDate :
7/1/1998 12:00:00 AM
Abstract :
The key technique in applying keepered media system in a reproduction is how to “open” the keeper layer. In this paper we propose a new concept of keepered-media-reproduction with Dual Magnetoresistive (DMR) heads. The keeper layer may be biased by the stray flux from DMR sensors, The shunting-releasing ratio between reproduced signals without and with a sense current is found to be -26 dB. This media system is completely stable against thermal demagnetization. It is believed that keepered media may offer a similar advantage with MR heads and potentially allow magnetics to break the 10 Gb/in2 areal density barrier with the aid of the high performance gains of MR heads
Keywords :
finite element analysis; magnetic disc storage; magnetic heads; magnetoresistive devices; TOSCA package; areal density barrier; biased layer; dual magnetoresistive heads; finite element model; high performance gain; keepered media reproduction; magnetic recording; nonlinear EM field simulation; replay process simulation; reproduced signals; sense current; shunting-releasing ratio; stable against thermal demagnetization; stray flux; Degradation; Demagnetization; Helium; Magnetic flux; Magnetic heads; Magnetic recording; Magnetic sensors; Magnetoresistance; Performance gain; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
