Development of Advanced Ferromagnetic Resonance Microscopes for Materials Research and Education

马里兰大学的科学家们获得了材料研究部材料研究仪器项目的奖金，他们将开发一种基于铁磁共振现象的微波显微镜。利用一种新颖的半球形腔设计，聚焦微波场，他们将达到5微米或更好的空间分辨率，最终目标是小于1微米。该仪器将允许绘制许多不同的磁性，包括磁化、自旋轨道耦合和磁各向异性。它还将测量磁均匀性，并通过磁弹性耦合成像局部应力。此外，通过使用5 ~ 50 GHz的多腔共振，我们还可以研究局部自旋弛豫动力学。该仪器将在下一代学习磁性材料的学生的教育和培训中发挥关键作用。该奖项来自材料研究部门的材料研究仪器项目，用于马里兰大学的仪器开发。马里兰大学的科学家将开发一种创新的扫描探针显微镜，它可以绘制材料的各种磁性。磁性在许多技术应用中起着至关重要的作用，包括用于高速通信的磁存储和磁光开关。这种显微镜对于研究传统磁性技术难以研究的性质将是无价的。这也将用于筛选组合库，以帮助寻找新的磁性材料。这种新型扫描探针显微镜通过提供各种性质的空间分辨图像，将成为一种有用的教育工具。

With this award from the Instrumentation for Materials Research Program in the Division of Materials Research, scientists at the University of Maryland will develop a microwave microscope based on the phenomenon of ferromagnetic resonance. Using a novel hemispherical cavity design, which focuses the microwave field, they will attain the spatial resolution of 5 micron or better with an ultimate goal of less than 1 micron. The instrument will allow mapping out many different magnetic properties including magnetization, spin-orbit coupling, and magnetic anisotropy. It will also measure magnetic homogeneity and image local stresses via magnetoelastic coupling. In addition, by using multiple cavity resonance, which range from 5 to 50 GHz, we will also be able to investigate local spin relaxation dynamics. The instrument will play a key role in the education and training of the next generation of students studying magnetic materials.This award from the Instrumentation for Materials Research Program in the Division of Materials Research is for instrument development at the University of Maryland. Scientists at the university of Maryland will develop an innovative scanning probe microscope, which allows mapping of a variety of magnetic properties of materials. Magnetism plays a critical role in many technological applications including magnetic storage and magneto-optic switches for high-speed communications. The microscope will be invaluable for investigating properties that are difficult to study by conventional magnetic techniques. This will also be used to screen combinatorial libraries to aid in the search for novel magnetic materials. This new type of scanning probe microscope will become a useful educational tool by providing spatially resolved images of various properties.