Acquisition of SQUID Magnetometer to Augment Magnetics Research

这种基于SQUID的样品磁强计将执行快速，精确 测量材料的磁性能在广泛的 温度范围和施加的磁场。 它有一个 一个完整而复杂的计算机操作系统， 和分析，并允许完全自动化。 拟议 仪器灵敏度超过现有设备能力， 温度控制和计算机控制。 该系统将用于 由物理系和化学系的四名教员 用于基础材料研究，并将帮助培训 本科生和研究生（20人），博士后（3人）。 SQUID磁强计是一个中心测量， 表征仪器的几个项目：测量 用新方法制备的超细颗粒的磁性能 具有独特组成和结构的合成技术; 光激发电荷的存储和弛豫过程的研究 II-VI族混晶中的载流子及相关临界现象; 磁各向异性和界面交换的研究 稀土金属和过渡金属的多层膜及其 氧化物和研究这些系统中的临界现象; 有机铁磁体的测量。

This SQUID-based sample magnetometer will perform fast, precise measurements of the magnetic properties of materials over a broad range of temperatures and applied magnetic fields. It has a complete and sophisticated computer operating system for control and analysis and allows for total automation. The proposed instrument exceeds current equipment ability in sensitivity, temperature control, and computer control. The system will be used by four faculty members of the Physics and Chemistry departments for fundamental materials research, and will aid in training of undergraduates and graduate students (20), and postdocs (3). The SQUID magnetometer is a central measurement and characterization apparatus for several projects: measurement of magnetic properties of ultrafine parcticles prepared via novel synthetic techniques having unique compositions and structures; studies of storage and relaxation processes of photoexcited charge carriers in II-VI mixed crystals and related critical phenomena; studies of magnetic anisotropy and interface exchange in multilayers of rare-earth metals and transition metals and their oxides and studies of critical phenomena in these systems; and measurements of organic ferromagnets.//