Simulations of Complex Order in Thin-Film Magnetic Systems

薄膜磁系统中复杂阶次的模拟

• 批准号: RGPIN-2016-04499
• 负责人: Plumer, Martin
• 金额: $ 1.6万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633046
• 关键词: Simulations; Complex; Order; Thin; Film

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.

我研究的主要目的是更深入地了解用于纳米器件应用的复杂磁性材料，这可以促进其功能的改进。从高温超导性的增强到通过计算机硬盘驱动器传感器设备实现TB级数据存储，对磁性结构和材料的基本理解导致了近几十年来激进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。通过广泛的计算机建模，我们将揭示新表征的晶体结构所产生的新的磁相，这些晶体结构与纳米级磁阻传感器相关。这些代表了研究的途径，桥梁基础和应用物理学。我们的工作将提供一个微观（原子自旋水平）的理解交换钉扎在硬盘驱动器的自旋阀磁传感器技术，在过去的二十年里一直困扰着研究人员。这种理解将有助于提高传感器稳定性和性能的方法。