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Technology Stocks : Ampex Corporation (AEXCA)
AMPX 11.98+3.4%Jan 28 3:59 PM EST
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To: Swamp Fox who wrote (1369)12/5/1997 4:32:00 PM
From: Gus  Read Replies (1) of 17679
 
I believe that this study was done with the keeper layer as an overlayer. Ampex presented the results of the use of the keeper layer as an underlayer at an IDEMA conference in Colorado a few months after Intermag 97 in April.

Experimental Study of Recording Performance of Sendust and CoZrNb Keepered Thin Film Media

IEEE Transactions on Magnetics Vol 33, No. 5, P3040 (Presented on the Intermag Conference, 1997)

ABSTRACT. Significant improvements of recording performance such as enhanced read back signal and reduced pulse width of NiFe keepered thin film media have been reported [1] and modeled [2]. Keepered media may become even more attractive at ultra-high areal densities because of possible stabilization of recorded transitions from
thermally-activated demagnetization......

ee.umn.edu

Note: Full paper available in acrobat(PDF) format.

Thanks to Sean for these nuggets of info.

In 1968, the Ampex Corporation Research Department hired a recently graduated doctoral student from the Massachusetts Institute of Technology named Robert P. Hunt. His initial assignment was quite simple: "Find something new and usful in magnetic storage technology." Shortly thereafter, Bob Hunt invented the magneto-resistive head (MRH).

-- John C. Mallinson, "Magneto-Resistive Heads, Fundamentals and Applications"

ee.umn.edu
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