MRI: Acquisition of Magnetic Property Measurement System

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是一款多功能仪器，可测量各种材料系统，具有高样品吞吐率。 该仪器将支持约翰霍普金斯大学在凝聚态物理学、材料科学、磁物理学和化学物质磁性方面的大量积极研究工作。 MPMS系统的收购将显着提高目前的研究计划，并使新的研究方向在约翰霍普金斯。 拟议的仪器将加强直接参与拟议研究的约12名博士后研究员和20名研究生的研究培训。由于该工具将提供给更广泛的约翰霍普金斯研究界，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实验室课程，以及广泛的教育推广计划，重点是材料研究，已经在约翰霍普金斯高中学生，高中教师和本科生。 MPMS还将支持NSF资助的PARADIM计划中正在进行的工作。 该奖项是为了表彰约翰霍普金斯大学收购的用于测量各种材料、地质和化学样品磁性的磁性测量系统（MPMS）。 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”）。 所提出的系统有一个磁铁，可以施加高达7特斯拉的磁场到一个可变温度的样品室。 超过标准T = 1.8至400 K的温度能力，对于大多数拟议的科学来说是必要的，将由样品空间烘箱提供，允许高达T = 800 K，以及氦三插入选项，允许低至T = 0.3 K的低温测量。 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，准二维有机导体中的磁性，磁性纳米材料的合成和组装，血红素和非血红素类似物的研究该奖项反映了NSF的法定使命，并被认为是值得通过使用基金会的知识价值和更广泛的影响审查标准进行评估的支持。

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.