CAREER: Magnetization Dynamics and Damping in Magnetic Nanostructures

*非技术摘要*本学院早期职业生涯奖资助研究磁性纳米结构中的磁化动力学以及磁化的衰减。更好地了解磁性纳米结构中的磁化动力学及其衰减对于自旋电子学的研究领域是至关重要的，自旋电子学的目标是利用电子的一种被称为自旋的量子力学性质来开发具有新功能的电子器件。在这种情况下，磁化的衰减将是一个关键因素，例如，将自旋电子器件的总功耗降至最低。该项目将调查已建立的材料系统以及新材料，但也将调查使用磁性纳米颗粒进行高频生物传感的可行性，这将有许多可能的应用。该项目将通过为当地高中生和本科生提供研究经验和培养研究生，无缝整合各级教育活动。此外，还将设计和开发与这一职业项目有关的在线教育材料，并将向公众开放。*技术摘要*了解磁性纳米结构中的磁化动力学和阻尼对于自旋电子学的许多方面都是至关重要的，自旋电子学是一个研究领域，目标是使用电子自旋来实现新的电子设备。该学院早期职业奖资助研究磁性纳米结构中的磁化动力学和阻尼性。将利用宽带铁磁共振技术研究以下方面的磁化动力学和阻尼：(A)铁磁/反铁磁结构，包括利用离子辐照改性的系统，有望为研究两磁振子散射在这些结构中的作用提供新的见解；(B)新型自旋电子材料，包括B2有序合金，旨在为未来低阻尼材料的开发提供指导；(C)磁性纳米颗粒，旨在研究高频生物传感的可行性。该项目将通过为当地高中生和本科生提供研究经验和培养研究生，无缝整合各级教育活动。此外，还将设计和开发与这一职业项目有关的在线教育材料，并向公众开放。

****NON-TECHNICAL ABSTRACT****This Faculty Early CAREER award funds research to investigate magnetization dynamics as well as the damping of the magnetization in magnetic nanostructures. A better understanding of the magnetization dynamics and its damping in magnetic nanostructures is of fundamental importance for the research area of spintronics, which targets the use of a quantum mechanical property of the electron known as "spin" to develop electronic devices with new functionality. In this context the damping of the magnetization will be a key factor, for example, to minimize the overall power consumption of spintronic devices. This project will investigate established material systems as well as new materials, but will also investigate the feasibility of high frequency biosensing using magnetic nanoparticles, which would have a number of possible applications. This project will seamlessly integrate education activities at all levels of education through research experiences for local high-school and undergraduate students and training of graduate students. In addition online educational material pertaining to this CAREER project will be designed and developed and will be made accessible for the general public.****TECHNICAL ABSTRACT****Understanding the magnetization dynamics and damping in magnetic nanostructures is of fundamental importance for many aspects of spintronics, a research area that targets the use of the electron spin to implement new electronic devices. This Faculty Early CAREER award funds research to investigate the magnetization dynamics and damping in magnetic nanostructures. Broadband ferromagnetic resonance techniques will be used to investigate the magnetization dynamics and damping in: (a) ferromagnet/antiferromagnet structures including systems modified using ion irradiation, expected to provide new insights in the role of two-magnon scattering in these structures; (b) new spintronic materials including B2 ordered alloys, aimed at providing guidance for the future development of low damping materials; (c) magnetic nanoparticles, aimed at investigating the feasibility of high frequency biosensing. This project will seamlessly integrate education activities at all levels of education through research experiences for local high-school and undergraduate students and training of graduate students. In addition online educational material pertaining to this CAREER project will be designed and developed and will be made accessible for the general public.