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Experimental studies using in-contact recording on chromium-cobalt films

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3 Author(s)
Lazzari, J.-P. ; Laboratories d''Electronique et de Technologie de''Informatique, Grenoble, France ; Melnick, I. ; Randet, D.

Cr-Co evaporated films were written upon and read with a vibrating head apparatus. The effects of the head-to-medium spacing upon the half-pulsewidth were carefully measured between 0 and 4 μm. The formulaP_{50} = [g^{2} + 4(d + a)^{2}]^{1/2}was found to hold quite well. However, the conservation of P50after the heating of a recording and the consequent increase oftB_{r}/H_{c}raise questions about the effect of the self-demagnetization outside the head, usually assumed as dominant.

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Magnetics, IEEE Transactions on  (Volume:5 ,  Issue: 4 )