CAREER: Magnetization Dynamics and Damping in Magnetic Nanostructures

职业：磁性纳米结构中的磁化动力学和阻尼

• 批准号: 0952929
• 负责人: Tim Mewes
• 金额: $ 49万
• 依托单位: University of Alabama Tuscaloosa
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0952929&HistoricalAwards=false
• 关键词: CAREER; Magnetization; Dynamics; Damping; Magnetic

****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.

* 非技术摘要 * 该学院早期职业奖资助研究，以调查磁化动力学以及磁性纳米结构中磁化的阻尼。更好地理解磁性纳米结构中的磁化动力学及其阻尼对于自旋电子学的研究领域具有根本的重要性，自旋电子学的目标是使用被称为“自旋”的电子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，磁化的阻尼将是一个关键因素，例如，以最大限度地减少自旋电子器件的总功耗。该项目将研究已建立的材料系统以及新材料，但也将研究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和本科生提供研究经验以及培训研究生，无缝地整合各级教育的教育活动。此外，还将设计和开发与该职业项目有关的在线教育材料，并将向公众开放。*技术摘要 * 理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具有根本重要性，自旋电子学是一个研究领域，其目标是使用电子自旋来实现新的电子器件。该学院早期职业奖资助研究，以调查磁性纳米结构的磁化动力学和阻尼。宽带铁磁共振技术将用于研究下列材料中的磁化动力学和阻尼：（a）铁磁/反铁磁结构，包括用离子辐照改性的系统，预计将对这些结构中双磁振子散射的作用提供新的认识;（B）新的自旋电子材料，包括B2有序合金，旨在为低阻尼材料的未来发展提供指导;（c）磁性纳米粒子，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和本科生提供研究经验以及培训研究生，无缝地整合各级教育的教育活动。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，供公众使用。