Acquisition of a SQUID Magnetometer

9871267科恩一个敏感的和多功能的SQUID（超导量子干涉装置）磁力计，用于研究具有有趣的超导，磁性和/或电子特性的材料，以及地质学上有趣的样品的磁性特性的表征，将使用主要研究仪器计划的资金获得。 该仪器提供了商业仪器中最高的灵敏度，允许应用高达5.5T的直流磁场，样品温度范围从2K到800 K，交流磁化率测量和光学访问。 样品探针组件允许垂直和水平旋转。 该仪器将积极用于俄勒冈州大学物理、化学和地质科学的研究项目，也将代表俄勒冈州内的一个独特设施。 SQUID磁强计可以进行三种一般类型的研究。 一个是对具有独特磁性或超导相的材料的一般搜索。 第二个是研究稀土或其他阳离子的氧化态作为形成过程的函数。 第三是在新的半导体相纳入磁性离子的研究。 使用所获得的仪器进行的许多项目将是化学小组之间的积极合作，重点是合成和结构表征测量，以及物理小组，参与更详细的物理和电子特性分析。% SQUID磁强计将由美国国家科学基金会的主要研究仪器计划提供资金，将提供给大型多学科用户群，并将提供俄勒冈州目前无法提供的能力。 ***

9871267CohenA sensitive and versatile SQUID (superconducting quantum interference device) magnetometer to be employed in the study of materials with interesting superconducting, magnetic, and/or electronic properties, and also in the characterization of the magnetic properties of geologically interesting samples will be acquired using funds from the Major Research Instrumentation program. The instrument to be acquired offers the highest available sensitivity in a commercial instrument, allows the application of DC magnetic fields up to 5.5T, a sample temperature range from 2K to 800K, AC susceptibility measurements, and optical access. The sample probe assembly allows for both vertical and horizontal rotation. The instrument will be actively utilized in research programs in physics, chemistry, and geological sciences at the University of Oregon, and will also represent a unique facility within the state of Oregon. Three general types of studies are made possible with the SQUID magnetometer. One is in the general search for materials with unique magnetic or superconducting phases. A second is in the study of oxidation states of rare earth or other cations as a function of the formation process. The third is in the study of new semiconducting phases incorporating magnetic ions. Many of the projects to be carried out using the acquired instrumentation will be active collaborations between groups in chemistry, focussing on synthesis and structural characterization measurements, and groups in physics, involved in more detailed analysis of the physical and electronic properties. %%%The SQUID magnetometer, that will be acquired using funds from the National Science Foundation's Major Research Instrumentation program, will be available to a large multidisciplinary user base and will provide capability not currently available in Oregon. ***