Abstract
In order to obtain high-density and wide-band recording characteristics, we have tried fabricating longitudinally oriented at inside layer and perpendicularly oriented at surface layer (LIPS) doubleorientation magnetic tapes uslng acicular particles by a single coating process, but a LIPS doubleorientation structure was not achieved. The purpose of this paper is to describe recording characteristics of LIPS tapes with an improved double-orientation structure by over-coating a perpendicularly oriented upper layer on a longitudinally oriented under layer. The prepared LIPS double-layered tape (upper layer of 2.1μm thickness consisting of metal particles with Hc=1.5kOe, under layer of 2.3 μm thickness consisting of magnetite particles with Hc=700 Oe) shows the highest output and widest band characteristics among the prepared perpendicularly oriented monolayer tapes and longitudinally double layered tapes, due to its smooth and perpendicularly well-oriented upper layer and the longitudinal orientation in the under layer.
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