Acquisition of SQUID Magnetometer to Augment Magnetics Research

这种基于SQUID的样品磁力仪将在广泛的温度和外加磁场范围内对材料的磁性进行快速、精确的测量。它拥有一套完整和复杂的计算机操作系统，用于控制和分析，并允许完全自动化。该仪器在灵敏度、温度控制和计算机控制方面超过了现有设备的能力。该系统将由物理系和化学系的四名教员用于基础材料研究，并将帮助培养本科生和研究生(20名)和博士后(3名)。SQUID磁强计是几个项目的中心测量和表征设备：测量通过新的合成技术制备的具有独特成分和结构的超细颗粒的磁性；研究II-VI混合晶体中光激电荷的存储和驰豫过程以及相关的临界现象；研究稀土金属和过渡金属及其氧化物多层膜的磁各向异性和界面交换，研究这些系统中的临界现象；以及有机铁磁体的测量。

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.//