Perpendicular Gigabit Recording Using Metallic Multilayers

[408882] Lairson磁性多层将作为一种新的垂直磁记录介质材料进行研究，特别是关于它们在硬盘存储方面的适用性。基本的结构和磁性应与层状材料的微磁性和记录性有关，晶体结构的薄膜将在工业标准的衬底上制备，可以测试记录性。众所周知的材料，如外延薄膜和沉积在有纹理的种子层上的薄膜，也应该使用工业公认的制造技术，如磁控溅射来制备。工作将集中于全面了解薄膜的基本性质以及这些性质与多层磁数据存储的关系。这项工作产生的新知识将有助于理解每平方英寸多千兆比特记录机制中的磁记录问题，以及多层微磁特性在覆盖、信噪比和数据稳定性等问题中所起的作用。预计这一知识将对多层硬盘数据存储的最终适用性产生重大的积极影响。＊＊＊

9408882 Lairson Magnetic multilayers will be studied as a new class of media materials for perpendicular magnetic recording, particularly with regard to their applicability to hard disk storage. Fundamental structural and magnetic properties shall be related to micromagnetic and recording properties in layered materials, and crystallographically textured films will be prepared on industry-standard substrates which can be tested for recording properties. Well-understood materials, such as epitaxial films and films deposited on textured seed layers, shall also be prepared using industry-accepted fabrication techniques such as magnetron sputtering. Work will focus on achieving a comprehensive understanding of the fundamental properties of the films and the relationship of these properties to magnetic data storage in multilayers. New knowledge resulting from this work will be the understanding of magnetic recording issues in the multigigabit per square inch recording regime and the role micromagnetic properties of multilayers play in issues such as overwrite, signal-to-noise, and data stability. It is anticipated that this knowledge will have a significant positive impact on the ultimate applicability of multilayers to hard disk data storage. ***