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·霍普金斯大学收购磁性测量系统(MPMS)，这是一种高磁场测量系统，用于测量各种材料、地质和化学样品的磁性。该MPMS是一种多功能仪器，可测量范围广泛的材料系统，具有较高的样品吞吐速率。这台仪器将支持约翰·霍普金斯大学在凝聚态物理、材料科学、地球物理和化学物种的磁性方面的大规模和积极的研究工作。收购MPMS系统将大大加强目前的研究计划，并使约翰·霍普金斯大学的新研究方向成为可能。拟议的文书将加强对直接参与拟议研究的大约12名博士后研究员和20名研究生的研究培训。由于该仪器将提供给更广泛的约翰·霍普金斯大学研究界，它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实验室课程，以及约翰霍普金斯大学已经针对高中生、高中教师和本科生实施的专注于材料研究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。该奖项是为了奖励约翰霍普金斯大学为测量各种材料、地质和化学样品的磁性而购买的磁性测量系统(MPMS)。该仪器是基于低温恒温器、集成超导磁体和超导量子干涉装置(即“SQUID”)。建议的系统有一个磁铁，可以将高达7特斯拉的磁场施加到可变温度的样品室。超出标准T=1.8至400K的温度能力是大部分拟议科学所必需的，将由允许高达T=800K的样品空间烤箱和允许低至T=0.3K的低温测量的氦三插入选项来提供。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、纳米磁性和超导纳米结构、新型超导体、准二维有机导体中的磁性、磁性纳米材料的合成和组装、这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。