Fabrication of nonepitaxially grown double-layered FePt:C/FeCoNi thin films for perpendicular recording

作者：Ming Yan, Xinrong Li, L. Gao, S. H. Liou, D. J. Sellmyer, R. J. M. van de Veerdonk, K. W. Wierman · 发表于：Applied Physics Letters · 年份：2003 · DOI：10.1063/1.1621071 · 被引用次数：105 · 研究领域：Magnetic properties of thin films、Metallic Glasses and Amorphous Alloys、Copper Interconnects and Reliability

A noneptaxially grown double-layered thin-film medium of nanocompsite FePt:C with a FeCoNi soft underlayer for high-density perpendicular magnetic recording was fabricated and investigated. Square-shaped perpendicular loops with a remanance ratio nearly equal to one and a coercivity as large as 8.5 kOe were obtained for this ordered FePt:C double-layered medium. The formation of the ordered L10 phase is confirmed by electron diffraction experiments. Transmission electron microscope observations reveal that FePt grains with a uniform size less than 5 nm are embedded in the C matrix and appear to be well isolated. Our results show that nonepitaxially grown (001) textured double-layered nanocomposite L10 FePt-based films with perpendicular anisotropy are a promising candidate to realize extremely high-density perpendicular recording.