Performance of Yoke type GMR heads

W. Folkerts, J. C.S. Kools, M.C. de Nooijer, U. M. Ruigrok, L. Postma, K.M.H. Lenssen, G. H.J. Somers, R. Coehoorn

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

Yoke type spin valve giant magnetoresistive (GMR) heads with a track width of 70 and 10 µm are studied. The head design has the sensor on top. The output of the heads is found to be upto 10 times larger than similar heads with a 30 nm Ni-Fe MRE linearized using a barberpole. The crucial role of the free layer permeability μr and the ferromagnetic interlayer coupling with respect to the head performance is analysed. This is argued to give design rules for the GMR material. The applied FeMn exchange biasing is shown to become unreliable above T=105°C.

Original languageEnglish
Pages (from-to)2591-2596
Number of pages6
JournalIEEE Transactions on Magnetics
Volume31
Issue number6
DOIs
Publication statusPublished - 1 Jan 1995
Externally publishedYes

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