Global Warming in the Proterozoic; extensive decarbonation event in the lower crust and its implications to the surface environment

这项工作是对硬盘驱动器中使用的磁记录材料的研究。当前记录介质的制造需要Ru作为底层，以便控制磁性层的生长和性质。然而，Ru是一种正在迅速消耗的贵金属。因此，无Ru记录介质的开发是必要的。本工作利用氮化铝来控制CoPt层的生长和性能，并成功地实现了磁记录所必需的垂直磁各向异性。

This work is a study on magnetic recording materials used in hard disk drives. The fabrication of current recording media needs ruthenium as underlayers in order to control the growth and properties of the magnetic layers. However, ruthenium is a noble metal that is being rapidly consumed. Therefore, development of ruthenium-free recording media is necessary. In this work aluminum nitride has been used to control the growth and properties of CoPt layers, and perpendicular magnetic anisotropy, which is necessary for magnetic recording, has been successfully realized.