Simulations of Complex Order in Thin-Film Magnetic Systems

我研究的主要目的是为了更深入地了解复杂的磁性材料在纳米器件中的应用，从而促进其功能的改进。从高温超导的增强到通过计算机硬盘驱动传感器设备实现TB级的数据存储，对磁性结构和材料的基本了解在近几十年带来了根本性的新见解和技术创新。新的磁性材料不断被发现，对其基本性质的研究将为其在未来技术中的应用提供一条途径。通过广泛的计算机模拟，我们将揭示与纳米磁阻传感器相关的新表征的晶体结构产生的新磁相。这些代表了连接基础物理和应用物理的研究途径。我们的工作将提供对硬盘驱动器自旋阀磁性传感器技术中交换钉扎的微观(原子自旋水平)理解，这项技术在过去20年里一直令研究人员难以理解。这种理解将有助于改进传感器的稳定性和性能的方法。

The main purpose of my research is to gain a deeper understanding of complex magnetic materials for nano-device applications which can facilitate improvements in their functionality. From the enhancement of high-temperature superconductivity to enabling terabytes of data storage through computer hard-drive sensors devices, fundamental understanding of magnetic structures and materials has led to radical new insights and technological innovations in recent decades. New magnetic materials continue to be discovered and investigations of their basic properties will provide a path for their applications in future technologies. Through extensive computer modeling, we will reveal novel magnetic phases arising from newly characterized crystal structures that are relevant to nano-scale magnetoresitive-based sensors. These represent avenues of research which bridge fundamental and applied physics. Our work will provide a microscopic (atomic-spin level) understanding of exchange pinning in hard-drive spin-valve magnetic sensor technology which has eluded researchers for the past twenty years. This understanding will facilitate methods to improve sensor stability and performance.