Artificially Inhomogeneous Magnetic Materials

人工非均匀磁性材料

• 批准号: 1609066
• 负责人: Casey Miller
• 金额: $ 39.78万
• 依托单位: Rochester Institute of Tech
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1609066&HistoricalAwards=false
• 关键词: Artificially; Inhomogeneous; Magnetic; Materials

Non-Technical Abstract This project advances the progress of science by exploring how to control magnetic properties by making materials in new and very well controlled ways, and evaluating what new applications may be realized with such magnetic materials. Advances in magnetism are integral to new sensors, computing technologies, energy efficiency, and data storage, all of which impact US health, prosperity, and national defense. The project may also benefit manufacturers that use advanced magnetic materials in their products, which will help the US maintain technological superiority. Additionally, this project will support the training of young scientists so that they become familiar with modern research techniques and scientific collaboration, and ultimately develop the skills needed thrive in the US scientific and engineering workforce. Technical AbstractThe goals of this work are to create and investigate nanoscale magnetic heterostructures that contain intentional distributions of magnetic properties. We will investigate how well-controlled composition gradients in magnetic structures can lead to new functions that may enable the design of new devices relevant to applications such as: magnetic recording and data storage; telecommunications; and energy harvesting. Focus areas include thermally tunable exchange coupling in magnetic films; magnonic waveguides; and graded magnetic structures for electrical energy generation via spin motive forces. Understanding how to define and control magnetic properties with temperature will have implications for energy harvesting and energy assisted magnetic recording. Understanding how magnons propagate in inhomogeneous magnetic materials may impact the future of telecommunications and enable novel computing architectures with reduced energy requirements. Understanding the novel phenomenon of spin motive force may lead to energy harvesting and advanced battery technologies. The artificially structured materials will be fabricated by thin film deposition techniques, and their physical properties will be characterized using magnetometry, diffraction, transport, and neutron scattering in collaboration with national laboratories.

非技术摘要该项目通过探索如何通过以新的和非常控制的方式制造材料来控制磁性的科学进步，并评估使用这种磁性材料可以实现哪些新应用程序。 磁性的进步是新传感器，计算技术，能源效率和数据存储不可或缺的一部分，所有这些都影响了美国的健康，繁荣和国防。 该项目还可能使在其产品中使用高级磁性材料的制造商受益，这将有助于美国保持技术优势。 此外，该项目将支持对年轻科学家的培训，以便他们熟悉现代研究技术和科学合作，并最终发展在美国科学和工程劳动力中所需的技能。 技术摘要这项工作的目标是创建和研究包含磁性特性有意分布的纳米级磁异构结构。 我们将研究磁性结构中控制良好的组合物梯度如何导致新功能，从而可以设计与以下应用相关的新设备，例如：磁记录和数据存储；电信;和能量收获。 焦点区域包括磁性膜中的可调交换耦合；宏伟的波导；并通过旋转动力来产生电能的磁性结构。了解如何用温度定义和控制磁性特性将对能量收集和能量辅助磁记录产生影响。 了解镁在不均匀的磁性材料中的传播如何影响电信的未来，并使能量需求减少的新型计算体系结构。 了解旋转动力的新型现象可能导致能量收集和先进的电池技术。 人为结构化的材料将通过薄膜沉积技术制造，其物理特性将使用磁力测定法，衍射，运输和中子散射来与国家实验室合作进行表征。