MRI: Acquisition of a SQUID Magnetometer for Research and Education

技术摘要乔治华盛顿大学(GW)将获得一台新的SQUID磁力仪，与乔治敦大学(GT)的研究人员共享。该磁力计将能够在1.9-800K的温度范围内进行高达7T的外加磁场测量，它将具有重新设置磁体以减少剩余场并允许低场操作的能力，以及一个重新凝聚的氦杜瓦，几乎可以消除氦损失和制冷剂填充。这台仪器的获得将使以下方面成为可能：碱还原产生的磁性纳米材料的研究；双核和三核第一排分子络合物的磁性研究；磁性和电子性质密切相关的磁有序系统的量子限制研究；金属-有机杂化框架材料中f-块金属与d-块金属的磁耦合研究；小磁性粒子和磁性纳米线的规则模型阵列的研究；高频纳米复合材料的开发；以及纳米磁性材料中磁化衰减的研究。该仪器将把GW和GT的研究人员聚集在一起，并催化有意义的合作。该仪器将通过研究和课堂教学为本科生、研究生和博士后研究员提供教育机会。华盛顿特区来自代表性不足群体的高中生将有机会通过ACS项目种子项目亲身参与这项研究。最后，除了这些项目将产生的科学知识的基本重要性之外，这些研究还将对需要高级软磁材料或硬磁材料的先进技术的发展产生影响。改进今天的技术和创造明天将在很大程度上取决于改进的磁性材料的发现和对其性质的深入了解。SQUID磁强计是研究和评价材料磁性的重要工具。它将被用来指导乔治华盛顿大学和乔治城大学的科学家努力发现磁性材料，这些材料将使技术进步成为可能，从而推动我们未来的经济。SQUID磁强计将为两所大学和来自大华盛顿特区地区的磁学研究人员之间的合作努力提供基础，协同推动科学进步。它还将用于通过本科生、研究生和博士后研究培养新一代科学家。此外，研究人员将利用美国化学学会的SEED项目，使华盛顿特区代表不足群体的高中生能够直接参与研究。收购SQUID磁力仪将使研究包括以下项目：开发用于医疗诊断、量子计算、雷达吸收“隐形”技术、高效能量转换和许多其他应用的纳米磁体；用于高强度永久磁体和纳米电子的纳米棒；以及促进对磁性材料的基本理解。

Technical AbstractThe George Washington University (GW) will acquire a new SQUID magnetometer to be shared with researchers at Georgetown University (GT). The magnetometer will be capable of making measurements at applied fields as high as 7 T in the temperature range of 1.9 - 800 K, it will have the ability to reset its magnet to reduce remanent fields and allow low field operation, and a re-condensing helium dewar to virtually eliminate helium loss and cryogen filling. The acquisition of this instrument will enable; the investigation of magnetic nanomaterials produced by alkalide reduction, the investigation of the magnetic properties of di- and trinuclear first-row molecular complexes, the study of quantum confinement on magnetically ordered systems for which the magnetic and electronic properties are intimately connected, the study of f-block metal magnetic coupling to d-block metals in hybrid metal-organic framework materials, the study of regular model arrays of small magnetic particles and magnetic nanowires, development of high frequency nanocomposites, and the study of magnetization decay in nanomagnetic materials. The instrument will bring GW and GT researchers together and catalyze meaningful collaboration. The instrument will provide educational opportunities for undergraduates, graduates and postdoctoral fellows through research and classroom instruction. Washington, DC high school students from underrepresented groups will be given the opportunity for hands-on participation in the research through the ACS program Project SEED. Finally, in addition to the fundamental importance of the scientific knowledge these projects will generate, the studies will have impact on the development of advanced technology requiring superior soft or hard magnetic materials.Lay AbstractMagnetic materials are of critical importance to a vast number of present and future applications: data storage, medical diagnostics, motors, bearings, generators, actuators, relays, meters, and transformers to name a few. Improving today's technology and creating tomorrow's will in no small part depend on the discovery of improved magnetic materials and the development of a deeper understanding of their properties. The SQUID magnetometer is an essential tool used to study and evaluate the magnetic properties of materials. It will be used to guide scientists at The George Washington University and Georgetown University in their efforts to discover the magnetic materials that will enable the technological advances that will drive our future economy. The SQUID magnetometer will provide the foundation to collaborative efforts between the two universities and magnetics researchers from the greater Washington DC area, synergistically driving scientific progress forward. It will also be used to train new generations of scientists through undergraduate, graduate, and postdoctoral research. In addition, the investigators will utilize the American Chemical Society's Project Seed to enable Washington, DC high school students from underrepresented groups to directly participate in the research. The research enabled by the acquisition of the SQUID magnetometer will include programs that will: develop nanomagnets for medical diagnostics, quantum computing, radar absorbing "stealth" technology, high efficiency energy conversion and numerous other applications; nanorods for high strength permanent magnets and nanoelectronics; and advance the fundamental understanding of magnetic materials.