Keepered-Perpendicular-Media Reproduction with Dual MR Heads

Na Helian, Zhi Gang Wang, David Wilton, Warwick Clegg, Paul Robinson

Research output: Contribution to journalArticlepeer-review


The key technique to apply keepered media system is how to" open" the keepered layer. In this paper, we wonld propose a new concept of keepered-media-reproduction with Dual MR heads. The keeper layer could be biased by the stray flux from DMR sensors. The shunting-releasing ratio between reproductive signals without and with sense current is found to be-26.6 dB. This is a completely-stable medium system 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 due to the high performance gains of MR heads.
Original languageEnglish
Pages (from-to)S2_273-276
JournalJournal of The Magnetics Society of Japan
Issue numberS_2_PMRC_97_2
Publication statusPublished - 1997


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