Acquisition of a SQUID Magnetometer

获取 SQUID 磁力计

• 批准号: 9871267
• 负责人: J. David Cohen
• 金额: $ 10.56万
• 依托单位: University of Oregon Eugene
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-01 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9871267&HistoricalAwards=false
• 关键词: Acquisition; SQUID; Magnetometer

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. ***

9871267Cohen一台灵敏、多功能的SQUID(超导量子干涉装置)磁力仪将用于研究具有有趣的超导、磁和/或电子性质的材料，并用于表征具有地质意义的样品的磁性，将使用重大研究仪器计划的资金。将获得的仪器具有商用仪器中最高的灵敏度，允许施加高达5.5T的直流磁场，样品温度范围从2K到800K，交流磁化率测量和光学访问。样品探头组件允许垂直和水平旋转。该仪器将积极用于俄勒冈大学的物理、化学和地质科学研究项目，也将代表俄勒冈州内的一个独特设施。使用SQUID磁强计可以进行三种一般类型的研究。一种是寻找具有独特磁性或超导相的材料。第二个是研究稀土或其他阳离子的氧化状态作为形成过程的函数。第三个是研究含有磁性离子的新的半导体相。将使用所获得的仪器开展的许多项目将是化学方面的小组和物理方面的小组之间的积极合作，前者侧重于合成和结构表征测量，后者涉及对物理和电子性质的更详细的分析。将使用国家科学基金会的主要研究仪器计划资金购买的SQUID磁强计将提供给大量多学科用户，并将提供俄勒冈州目前无法提供的功能。***