Novel Tunable Microwave Magnetoelectric Composite Materials and Devices with Metallic Magnetic Thin Film Materials

新型可调谐微波磁电复合材料及金属磁性薄膜器件

• 批准号: 0824008
• 负责人: Nian Sun
• 金额: $ 28.66万
• 依托单位: Northeastern University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0824008&HistoricalAwards=false
• 关键词: Novel; Tunable; Microwave; Magnetoelectric; Composite

Intellectual Merit: The strong magnetoelectric coupling and the many recent breakthroughs in magnetoelectric composites comprising both ferri/ferromagnetic and ferroelectric phases have made this area extremely exciting. However, the magnetoelectric coupling is far from strong enough, particularly for the microwave magnetoelectric composites used in RF/microwave signal processing devices. This is due to the lack of a suitable microwave magnetic material with combined properties of low loss tangent at microwave frequencies, large magnetostriction constant and high permeability. The purposes of this project are: (1) to investigate novel FeGaB microwave magnetic films with large magnetostriction constant and narrow ferromagnetic resonance linewidth; and (2) to explore novel tunable microwave magnetoelectric composite materials and devices with these FeGaB microwave magnetic films. This project will lead to a whole new class of highly magnetostrictive FeGaB microwave magnetic films and magnetoelectric composite materials, which will enable novel electrostatically tunable magnetoelectric signal processing devices critical for RF/microwave integrated circuits. Broader Impacts: The novel FeGaB films and FeGaB films based magnetoelectric composite materials and devices will lead to new functionalities on RF/microwave integrated circuits that ferroelectric or magnetic materials alone do not possess, and will have great impacts on many industries and on society. The education plan includes establishing the Magic of Magnetism program for the Museum of Science, Boston for informally educating the general public; and an extensive K ~ graduate education plan including graduate and undergraduate education, research experiences for undergraduates, high school students and teachers, emphasizing participation of underrepresented groups, particularly women and minorities.

智力优势：强磁电耦合以及包含铁/铁磁和铁电相的磁电复合材料的许多最新突破使该领域变得非常令人兴奋。然而，磁电耦合还不够强，特别是对于射频/微波信号处理器件中使用的微波磁电复合材料。这是由于缺乏合适的微波磁性材料，该材料具有微波频率下的低损耗角正切、大磁致伸缩常数和高磁导率的综合性能。本项目的目的是：（1）研究具有大磁致伸缩常数和窄铁磁共振线宽的新型FeGaB微波磁性薄膜； (2)利用这些FeGaB微波磁性薄膜探索新型可调谐微波磁电复合材料和器件。该项目将开发出一种全新的高磁致伸缩 FeGaB 微波磁性薄膜和磁电复合材料，这将使新型静电可调磁电信号处理器件成为射频/微波集成电路的关键。更广泛的影响：新型FeGaB薄膜和基于FeGaB薄膜的磁电复合材料和器件将为射频/微波集成电路带来铁电或磁性材料所不具备的新功能，并对许多行业和社会产生巨大影响。教育计划包括为波士顿科学博物馆建立磁力魔法项目，以对公众进行非正式教育；以及广泛的 K ~ 研究生教育计划，包括研究生和本科生教育、本科生、高中生和教师的研究经验，强调代表性不足的群体，特别是妇女和少数族裔的参与。