High-Frequency EPR Studies of Strong Spin-Orbit Effects in Molecular Magnetism

分子磁学中强自旋轨道效应的高频 EPR 研究

• 批准号: 1309463
• 负责人: Stephen Hill
• 金额: $ 40万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-06-15 至 2017-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1309463&HistoricalAwards=false
• 关键词: Frequency; EPR; Studies; Strong; Spin

****Technical Abstract****The ability to rationally design magnetic molecules with properties tailored for specific applications represents a key goal within the molecular magnetism community. The past few years have seen remarkable breakthroughs in this regard, aided by the study of molecules comprised of magnetic ions with strong spin-orbit anisotropy, e.g., orbitally degenerate transition metals and lanthanides. In order to develop a theoretical understanding of these highly anisotropic magnetic materials, electron paramagnetic resonance (EPR) studies performed at very high fields and frequencies are essential. Recent instrument developments at the National High Magnetic Field Laboratory (NHMFL), spanning unprecedented field and frequency ranges, will open up the EPR technique to many more materials of current interest. The information obtained will lead to improved theoretical understanding of the important static and dynamical processes that dictate the behavior of these materials. Strong collaboration with chemists will provide a crucial feedback loop, with the potential for transformative advances in molecule-based magnetic materials. Two female graduate students will participate in the research. Interdisciplinary workshops will also be organized, providing outstanding educational opportunities for a significant number of young researchers from diverse backgrounds, and a pipeline for knowledge transfer from within the NHMFL EPR program.****Non-Technical Abstract****Fundamental studies of nano-scale molecular magnetic materials are essential for future advances in information processing technologies. The past few years have seen remarkable advances in this field, aided by investigations of molecular magnets based on heavier elements found further down the periodic table than those that have traditionally been of interest, e.g., rare-earth elements. The unusual properties of these materials that make them attractive for applications necessitate the development of new measurement techniques. This project will bring to bear on this problem the uniquely high magnetic fields available at the US National High Magnetic Field Laboratory, together with recently developed magnetic resonance methodologies, with a view to obtaining improved understanding of the physical processes that give rise to technologically useful properties. Strong collaboration between physicists and chemists will provide a crucial feedback loop, with the potential for transformative advances in molecule-based magnetic materials. Two female students will participate in the research. Interdisciplinary workshops will also be organized, providing outstanding educational opportunities for a significant number of young researchers from diverse backgrounds.

****技术摘要****合理设计具有针对特定应用定制的特性的磁性分子的能力是分子磁性界的一个关键目标。过去几年，在对由具有强自旋轨道各向异性的磁性离子组成的分子（例如轨道简并过渡金属和镧系元素）的研究的帮助下，在这方面取得了显着的突破。为了从理论上理解这些高度各向异性的磁性材料，在非常高的场和频率下进行的电子顺磁共振（EPR）研究至关重要。国家强磁场实验室 (NHMFL) 最近开发的仪器跨越了前所未有的磁场和频率范围，将为 EPR 技术开辟更多当前感兴趣的材料。获得的信息将提高对决定这些材料行为的重要静态和动态过程的理论理解。与化学家的密切合作将提供至关重要的反馈回路，具有在分子磁性材料方面取得变革性进步的潜力。两名女研究生将参与这项研究。还将组织跨学科研讨会，为来自不同背景的大量年轻研究人员提供出色的教育机会，并为 NHMFL EPR 计划内的知识转移提供渠道。****非技术摘要****基础研究纳米级分子磁性材料对于信息处理技术的未来进步至关重要。过去几年，在对基于元素周期表中比传统上感兴趣的元素（例如稀土元素）更靠后的元素的分子磁体的研究的帮助下，该领域取得了显着的进展。这些材料的不寻常特性使其对应用具有吸引力，因此需要开发新的测量技术。该项目将利用美国国家高磁场实验室提供的独特高磁场以及最近开发的磁共振方法来解决这个问题，以期更好地理解产生技术上有用特性的物理过程。 。物理学家和化学家之间的强有力的合作将提供一个至关重要的反馈循环，具有在分子磁性材料方面取得变革性进步的潜力。两名女学生将参与这项研究。还将组织跨学科研讨会，为大量来自不同背景的年轻研究人员提供良好的教育机会。