Development of novel magnetic printing technology for servo signal writing on hard disks over 1 Tbit/square inch

研究了利用磁打印技术在记录密度大于1TB/in2的新一代硬盘上实现高精度、高速度、低成本的伺服信号记录，证明了实现的可能性。具有垂直磁各向异性和高磁化强度的COPT图案化母材使印刷性能有了很大的提高。此外，还阐明了CoPT/Ta/FeCoB/衬底叠层结构母材的印刷性能仍有较大提高。

This research was pursued to realize servo signal recording by using magnetic printing technology onto next generation hard disks with recording density over 1 Tbit/inch^2 with high accuracy, high speed and low cost, showing that the realization is possible. CoPt patterned master media with perpendicular magnetic anisotropy and high magnetization made the printing performance considerably improve. Moreover, it was clarified that the printing performance was still more improved by using CoPt/Ta/FeCoB/Substrate stacked structure master media.