Ba-ferrite磁性体を用いたリニアテープシステム用塗布型媒体

概要

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Two types of Ba-ferrite particulate media used in technical demonstrations that achieved 6.7 Gbit/in2 in 2007 and 29.5 Gbit/in2 in 2010 were compared by focusing on differences in their magnetic particle properties and tape characteristics. The results revealed that the difference in SNR between these two media could be explained by the difference in the particle volume and the orientation of the easy axis. The difference in the surface profile of these two media affected their frictional and stictional behavior without affecting their read/write characteristics in the short wavelength region. The long-term chemical stability of Ba-ferrite particulate media was also investigated using a Battelle Class II environment. The results indicated that Ba-ferrite particulate media have superior resistance to chemical corrosion compared to conventional metal particulate media.