[Paper] Advanced Particulate Magnetic Tapes Employing Fine Barium Ferrite Particles

Masahito Oyanagi; Atsushi Morooka; Masahiko Mori; Yuichi Kurihashi; Toshio Tada; Osamu Shimizu; Hiroyuki Suzuki; Takeshi Harasawa

doi:10.3169/mta.4.301

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[Paper] Advanced Particulate Magnetic Tapes Employing Fine Barium Ferrite Particles

Masahito Oyanagi, Atsushi Morooka, Masahiko Mori, Yuichi Kurihashi, Toshio Tada, Osamu Shimizu, Hiroyuki Suzuki, Takeshi Harasawa

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Keywords: Linear tape system, magnetic recording, barium ferrite, particulates

JOURNAL FREE ACCESS

2016 Volume 4 Issue 4 Pages 301-306

DOI https://doi.org/10.3169/mta.4.301

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Abstract

We have developed advanced magnetic tapes using fine barium ferrite particles. The magnetic particle volume of barium ferrite in the tapes is 1600 nm³. The perpendicular squareness ratio, surface roughness (obtained by optical interferometry), and ten-point average roughness (obtained by atomic force microscopy) of these tapes is 0.87, 0.9 nm, and 27 nm, respectively. The tapes show an areal density of 123 Gb/in², corresponding to a capacity of 220 TB, achieved by a combination of advanced drive technologies.

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