Materials World Network: Dynamically Controlled Artificial Magnonic Materials Based on Arrays of Nano-Sized Magnetic Dots

该项目侧重于人工纳米结构磁性系统的基本性质，其中单个纳米尺寸的磁性元件扮演人工“晶体”的“原子”角色。 通过选择“原子”的几何参数和磁参数，可以对这些“原子”之间的相互作用进行有序设计，并且可以通过偏置磁场脉冲对系统的磁基态进行真实的实时控制。 该研究将导致新型人造动态可控磁性材料在微波信号处理中的应用的发展。理论分析和数值计算的努力是针对创建一个明确的基本图片的静态和动态的集体行为，这样的材料。制造和实验的努力是针对材料的发展与优化的磁参数，可用于互惠和非互惠片上微波信号处理设备。来自奥克兰大学（Oakland University）和阿贡国家实验室（Argonne National Laboratory）的美国团队专注于磁性纳米结构（ANL）的理论（分析和数值）（NEM）以及制造和表征。来自Universidad del Pais Vasco（UPV）的西班牙团队致力于研究涡旋状态下的磁点理论和制造纳米结构的静态特性测量。来自基辅国立大学（KNU）的乌克兰团队专注于微波实验，这项结合理论、数值模拟和尖端实验技术的新型动态控制人造磁振子材料特性研究，预计将产生广泛的影响，超越磁学，延伸到材料科学和电气工程的其他领域。这项工作将对微波磁性材料领域产生变革性的影响，并将导致与现有平面半导体技术兼容的新型片上信号处理器件的发展。重点放在美国和欧洲的年轻研究人员的培训上，让他们在高度合作和国际环境中从事最先进的研究。学生和博士后研究员学习现代理论和实验技术，为他们提供在科学和技术领域成功职业生涯的工具，并使他们在学术界或工业界具有很高的就业能力。活动包括学生和高年级参与者的广泛团体间访问，以及学术界（KNU，UPV和KNU）和国家实验室（ANL）之间的互动。该项目协同结合了理论家，实验学家和制造专家，这对于快速发展基于相互作用的磁点阵列的人工磁性材料的基本理解和实际应用是必要的。

This project focuses on the fundamental nature of artificial nano-structured magnetic systems, where individual nano-sized magnetic elements play the role of "atoms" of an artificial "crystal". The interaction between these "atoms" can be designed-to-order by choosing the geometrical and magnetic parameters of the "atoms", and the magnetic ground state of the system can be controlled in real time by the pulses of bias magnetic field. The research will lead to the development of novel man-made dynamically controllable magnetic materials for applications in microwave signal processing. Theoretical analytical and numerical efforts are directed towards the creation of a clear fundamental picture of the static and dynamic collective behavior of such materials. The fabrication and experimental efforts are directed towards the development of materials with optimized magnetic parameters that can be used in reciprocal and non-reciprocal on-chip microwave signal processing devices. The US teams from Oakland University (OU) and Argonne National Laboratory (ANL) concentrate on theory (analytical and numerical) (OU) and fabrication and characterization of magnetic nano-structures (ANL). The Spanish team from Universidad del Pais Vasco (UPV) works on the theory of magnetic dots in a vortex state and on the measurements of static characteristics of fabricated nano-structures. The Ukrainian team from Kiev National University (KNU) concentrates on microwave experiments.This research of the properties of novel dynamically controlled artificial magnonic materials, combining theory, numerical simulations and cutting-edge experimental techniques, is expected to have a broad impact that extends beyond magnetism to other fields of materials science and electrical engineering. The work will have a transformative effect on the field of microwave magnetic materials, and will lead to the development of a novel class of on-chip signal processing devices compatible with the existing planar semiconductor technology. Significant emphasis is placed on the training of young researchers in the USA and Europe by engaging them in state-of-the-art research in a highly collaborative and international environment. Students and postdoctoral fellows learn modern theoretical and experimental techniques that provide them with the tools for successful careers in science and technology, and will make them highly employable in either academia or industry. Activities include extended inter-group visits of students and senior participants, and the interaction between academia (OU, UPV, and KNU) and a national laboratory (ANL). The project synergistically combines theorists, experimentalists, and fabrication specialists, as necessary for the rapid development of a fundamental understanding and practical applications of the proposed artificial magnetic materials based on arrays of interacting magnetic dots.