Crossfeed response of DMR vs. SAL multi-track heads

Frank Zhigang Wang, Na Helian, Desmond J Mapps, David Wilton, Warwick Clegg, Paul Robinson

Research output: Contribution to journalArticlepeer-review


A new concept of Dual Magnetoresistive reproductive mode is applied to improve the design and operation of high-performance multi-track Read-While-Write (RWW) heads for tape and/or potential disk applications. RWW operation exists in some magnetic recording units in which verifying what was recorded is necessary. A new multi-track Inductive/Dual Magnetoresistive (DMR) head design is found to reduce the crossfeed noise radiation by about a factor of 20, compared with the conventional Soft-Adjacent-Layer (SAL) Magnetoresistive Heads design, which is the most favoured approach for achieving simultaneous read and write operations, especially in a multi-track head with ultra-narrow trackwidth. To verify these analysis results, measurements with 2.9 /spl mu/m track width inductive/MR and inductive/DMR heads were done.
Original languageEnglish
Pages (from-to)1456-1458
JournalIEEE Transactions on Magnetics
Issue number4
Publication statusPublished - Jul 1998


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