Acquisition of a SQUID Magnetometer

这项请求是为了购买一台SQUID磁强计，它能够在2至800开尔文的温度范围内提供标准的磁力测量。SQUID磁强计在材料科学和工程、固态化学和凝聚态物理等基础研究中是必需的。将利用该磁强计的研究包括：混合金属氧化物的临界交叉能和氧化还原能的研究；硫化物和硫氰酸盐等共价体系中的磁相互作用；晶体化学和金属氧化物的性质；永磁合金和固体自由形式制造；粉末和气相激光加工和纳米粉末加工。一台可用的磁力计将允许对研究生和本科生进行一项对材料合成、表征和加工非常重要的技术培训。这个磁力仪将被安置在材料科学与工程中心，主要由六名教职员工和该中心的其他四名成员使用。PI和CO-PI将通过其当前和待定的NSF支持提供维护和操作。仪器将由PI/CO-PI(70%使用)与其他三组(30%使用)共享。大约22名研究生、7名博士后和4名本科生将可以使用这种仪器。

This request is for the purchase of a SQUID magnetometer capable of providing standard magnetic measurements over a wide range of temperature, from 2 to 800 Kelvins. The SQUID magnetometer is needed in fundamental studies of problems in materials science and engineering, solid state chemistry, and condensed matter physics. Studies which will make use of the magnetometer include: investigations of the critical cross-over energies and redox energies in mixed-metal oxides; magnetic interaction in covalent systems such as chalcogenides and pnictides, crystal chemistry and properties of metal oxides; permanent magnet alloys, and solid freeform fabrication; powder and gas-phase laser processing and nanometer powder processing. An available magnetometer will allow the training of graduate and undergraduate students in a technique important for materials synthesis, characterization, and processing. This magnetometer will be housed in the Center for Materials Science and Engineering, used primarily by six faculty members and four other members of the center. Maintenance and operation will be provided by the PI and CO-PI through their current and pending NSF support. The instrument willl be shared by the PI/CO-PI (70% use) with three other groups (30% use). About 22 grad students, 7 post-docs, and 4 undergraduate students will have access to this instrument.