MRI: Acquisition of Magnetic Property Measurement System

MRI：磁性能测量系统的采集

• 批准号: 1828490
• 负责人: Norman Armitage
• 金额: $ 45.83万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-06-01 至 2020-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1828490&HistoricalAwards=false
• 关键词: MRI; Acquisition; Magnetic; Property; Measurement

This award supports the acquisition of a Magnetic Properties Measurement System (MPMS), a high-magnetic-field, measurement system for measuring the magnetic properties of various material, geological, and chemical specimens at Johns Hopkins University. This MPMS is a versatile instrument that can measure a wide range of material systems with a high sample throughput rate. This instrument will support a large and active research effort in condensed matter physics, materials science, geophysics, and magnetism of chemical species at Johns Hopkins University. Acquisition of the MPMS system will significantly enhance current research programs and enable new research directions at Johns Hopkins. The proposed instrument will enhance the research training of the approximately twelve postdoctoral fellows and twenty graduate students directly involved in the proposed research. As the instrument will be made available to the broader Johns Hopkins research community, its impact on research training will grow with time. The instrument will also benefit undergraduate and graduate laboratory courses, and the extensive education outreach programs focusing on materials research that are already in place at Johns Hopkins for high school students, high school teachers, and undergraduates. The MPMS will also support work going on in the NSF funded PARADIM program. This award is for the acquisition of a Magnetic Properties Measurement System (MPMS) for measuring the magnetic properties of various material, geological, and chemical specimens at Johns Hopkins University. The instrument is based on a low-temperature cryostat, an integrated superconducting magnet and a superconducting quantum interference device (a "SQUID"). The proposed system has a magnet that can apply magnetic fields up to 7 Tesla to a variable temperature sample chamber. Temperature capabilities beyond the standard T = 1.8 to 400 K, necessary for much of the proposed science, will be provided by a sample space oven, allowing up to T = 800 K, and a helium three insert option, allowing low temperature measurements down to T = 0.3 K. The work will include experiments that spans a wide range of scientific areas, including probing correlated electron systems, nanomagnets and superconducting nanostructures, new superconductors, magnetism in quasi-two-dimensional organic conductors, synthesis and assembly of magnetic nanomaterials, and investigations of analogs of heme- and non-heme metalloenzymes.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持约翰·霍普金斯大学购买磁性测量系统 (MPMS)，这是一种高磁场测量系统，用于测量各种材料、地质和化学样本的磁性。 该 MPMS 是一款多功能仪器，可以以高样品吞吐率测量各种材料系统。 该仪器将支持约翰·霍普金斯大学在凝聚态物理、材料科学、地球物理学和化学物质磁性方面开展的大量积极的研究工作。 收购 MPMS 系统将显着增强约翰·霍普金斯大学当前的研究项目并实现新的研究方向。 拟议的仪器将加强直接参与拟议研究的约十二名博士后研究员和二十名研究生的研究培训。随着该仪器将向更广泛的约翰·霍普金斯大学研究界提供，其对研究培训的影响将随着时间的推移而增长。该仪器还将有利于本科生和研究生的实验室课程，以及约翰·霍普金斯大学已经为高中生、高中教师和本科生实施的以材料研究为重点的广泛教育推广计划。 MPMS 还将支持 NSF 资助的 PARADIM 计划中正在进行的工作。 该奖项旨在表彰约翰·霍普金斯大学购买的磁性测量系统 (MPMS)，用于测量各种材料、地质和化学样本的磁性。 该仪器基于低温恒温器、集成超导磁体和超导量子干涉装置（“SQUID”）。 所提出的系统具有一个磁铁，可以将高达 7 特斯拉的磁场施加到可变温度样品室。 超出标准 T = 1.8 至 400 K 的温度能力（对于许多拟议的科学来说是必需的）将由样品空间烤箱提供，允许高达 T = 800 K，以及氦三插入选项，允许低温测量低至T = 0.3 K。这项工作将包括跨越广泛科学领域的实验，包括探测相关电子系统、纳米磁体和超导纳米结构、新型超导体、磁性准二维有机导体、磁性纳米材料的合成和组装，以及血红素和非血红素金属酶类似物的研究。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力优势和更广泛的评估，被认为值得支持。影响审查标准。