GOALI/FRG: Nanoscale Magnetic Measurements in Doped Oxides

非技术描述：这个大学-工业研究项目开创了先进能源相关陶瓷的纳米尺度磁学测量技术。这项工作是基于这样一个事实，即不同材料状态的陶瓷将产生明显不同的磁响应，从而能够研究以前无法获得的纳米级物理现象。主要的科学目标是将陶瓷材料的不同磁响应与纳米结构特征联系起来。这一结果将对许多在理解和控制纳米尺度现象方面存在挑战的技术能源应用领域产生广泛的影响，但也有望通过帮助推进基于磁性的测量的计量学来影响陶瓷行业。行业合作伙伴Quantum Design是磁性设备行业的领先者，将在项目期间吸引学生。学生们还将组织和举办一年一度的校园陶瓷会议，参加会议的有业界、教师和当地社区成员。技术细节：设计了一个系统的实验研究计划，将掺杂陶瓷氧化物的磁性行为与纳米级特征联系起来，这些特征将使用一套材料表征工具进行独立测量，并用动力学和热力学理论进行解释。这项研究是基于这样一个事实：掺杂陶瓷的磁响应对不同的内部物质状态高度敏感：(1)未掺杂陶瓷；(2)掺杂陶瓷中溶液中的金属离子；(3)金属离子作为氧化物；以及(4)金属颗粒。用不同的过渡金属(Ni、Co和Fe)掺杂两种基质陶瓷，一种是基于氧化锆基的，另一种是基于钙钛矿结构的，以产生不同的磁响应结构。该研究为推进磁学纳米尺度计量的发展奠定了基础。学生将参与开发具有潜在变革性的磁学表征工具并接受培训。

NON-TECHNICAL DESCRIPTION: This university-industry research project pioneers nanoscale magnetometry measurement techniques for advanced energy-related ceramics. The work is predicated by the fact that markedly different magnetic responses will be elicited for ceramics in different materials states, allowing an investigation of nanoscale physical phenomena that have been previously inaccessible. The main scientific objective is to correlate the different magnetic response of ceramic materials with nanoscale-structure features. The results will have broad implication across many technical energy applications where challenges exist in understanding and controlling nanoscale phenomena, but are also expected to impact the ceramics community by helping to advance the metrology of magnetic based measurements. The industrial partner, Quantum Design, is a leader in the magnetic equipment industry and will engage students during the project. The students will also organize and run an annual on-campus conference in ceramics with participation from industry, faculty and members of the local community. TECHNICAL DETAILS: A systematic experimental research program is designed to correlate the magnetic behavior of doped ceramic oxides with nanoscale features that will be independently measured with a suite of materials characterization tools and interpreted with kinetics and thermodynamics theory. The research is based on the fact that the magnetic response of doped ceramics is highly sensitive to different internal material states: (1) the undoped ceramic; (2) metallic ions in solution within the doped ceramic; (3) metallic ions as an oxide; and (4) metal particles. Two host ceramics, one based on ZrO2 and one based on the perovskite structure, are doped with various transition metals (Ni, Co, and Fe) to create a variety of structures that exhibit different magnetic responses. The research lays the foundation to advance the state of nanoscale metrology for magnetometry. Students will be engaged and trained in the potentially transformative magnetometry characterization tools developed.