Computational Studies of Dynamical Phenomena in Nanoscale Ferromagnets

纳米级铁磁体动力学现象的计算研究

• 批准号: 0444051
• 负责人: Mark Novotny
• 金额: $ 36万
• 依托单位: Mississippi State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0444051&HistoricalAwards=false
• 关键词: Computational; Studies; Dynamical; Phenomena; Nanoscale

In recent years, revolutionary progress has occurred in the scientific understanding and technological applications of materials that derive their functionality from nanometer-sized particles and/or ultrathin films of one or a few atomic monolayers. One can now engineer materials at the atomic level and study the structure and dynamics of individual particles with nanometer resolution microscopies. These exciting experimental and technological developments are matched by novel computational algorithms and computer architectures that make it possible to numerically study dynamic effects in theoretical models of such materials.Intellectual Merit: This award will support theoretical and computational research to further develop novel simulation algorithms for hysteresis and thermally driven magnetization reversal in models of nanoscale ferromagnets. The research will improve the understanding of dynamical phenomena in real nanoscale ferromagnetic materials at nonzero temperature over a large range of time scales. Broader Impact: Improved basic understanding of the dynamics of magnetization switching and hysteresis in real nanoscale magnetic materials will result. This will clarify the relations between materials structure and dynamics and, at the same time, data integrity and read/write speed in future ultra-high density magnetic recording media and magnetic random access memories. Students at all levels will be involved with this project.%%%In recent years, revolutionary progress has occurred in the scientific understanding and technological applications of materials that derive their functionality from nanometer-sized particles and/or ultrathin films of one or a few atomic monolayers. One can now engineer materials at the atomic level and study the structure and dynamics of individual particles with nanometer resolution microscopies. These exciting experimental and technological developments are matched by novel computational algorithms and computer architectures that make it possible to numerically study dynamic effects in theoretical models of such materials.Intellectual Merit: This award will support theoretical and computational research to further develop novel simulation algorithms for hysteresis and thermally driven magnetization reversal in models of nanoscale ferromagnets. The research will improve the understanding of dynamical phenomena in real nanoscale ferromagnetic materials at nonzero temperature over a large range of time scales. Broader Impact: Improved basic understanding of the dynamics of magnetization switching and hysteresis in real nanoscale magnetic materials will result. This will clarify the relations between materials structure and dynamics and, at the same time, data integrity and read/write speed in future ultra-high density magnetic recording media and magnetic random access memories. Students at all levels will be involved with this project.***

近年来，在从纳米尺寸的颗粒和/或一个或几个原子单层的纳米薄膜获得其功能的材料的科学理解和技术应用方面已经发生了革命性的进展。 人们现在可以在原子水平上设计材料，并利用纳米分辨率显微镜研究单个粒子的结构和动力学。 这些令人兴奋的实验和技术的发展相匹配的新的计算算法和计算机架构，使其有可能数值研究动态效应的理论模型，这种材料。智力优点：该奖项将支持理论和计算研究，以进一步开发新的模拟算法的磁滞和热驱动的磁化反转模型的纳米铁磁体。 该研究将提高对真实的纳米铁磁材料在非零温度下大范围时间尺度上动力学现象的理解。 更广泛的影响：提高对真实的纳米磁性材料中磁化转换和磁滞动态的基本理解。 这将阐明材料结构和动力学之间的关系，同时，在未来的超高密度磁记录介质和磁随机存取存储器的数据完整性和读/写速度。 所有级别的学生都将参与此项目。%近年来，在从纳米尺寸的颗粒和/或一个或几个原子单层的纳米薄膜获得其功能的材料的科学理解和技术应用方面已经发生了革命性的进展。 人们现在可以在原子水平上设计材料，并利用纳米分辨率显微镜研究单个粒子的结构和动力学。 这些令人兴奋的实验和技术的发展相匹配的新的计算算法和计算机架构，使其有可能数值研究动态效应的理论模型，这种材料。智力优点：该奖项将支持理论和计算研究，以进一步开发新的模拟算法的磁滞和热驱动的磁化反转模型的纳米铁磁体。 该研究将提高对真实的纳米铁磁材料在非零温度下大范围时间尺度上动力学现象的理解。 更广泛的影响：提高对真实的纳米磁性材料中磁化转换和磁滞动态的基本理解。 这将阐明材料结构和动力学之间的关系，同时，在未来的超高密度磁记录介质和磁随机存取存储器的数据完整性和读/写速度。 各个级别的学生都将参与该项目。*