MRI: Development of Full Vector Vibrating Sample Magnetometry for Materials Research and Education

MRI：用于材料研究和教育的全矢量振动样品磁强计的开发

• 批准号: 2216440
• 负责人: Wilhelmus Geerts
• 金额: $ 12.14万
• 依托单位: Texas State University - San Marcos
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2216440&HistoricalAwards=false
• 关键词: MRI; Development; Full; Vector; Vibrating

This Major Research Instrumentation award provides funding for the development of triaxial vibrating sample magnetometry (VSM) to characterize anisotropic magnetic materials. A magnetometer is an instrument that allows one to characterize magnetic material, for example the magnets that stick to your refrigerator door. To fully characterize magnetic materials, it is necessary to measure all three components of the magnetic dipole moment vector. Triaxial VSMs however are not commercially available and less than a handful of research labs in Europe, Japan and Russia have attempted in the past to build a triaxial VSM. The instrument development allows for triaxial measurements to be done over a large temperature and field range. The vector coil sets that will be developed is extremely important for understanding the magnetic properties of anisotropic materials that have magnetic properties that vary with field direction. The new tools are expected to strengthen existing research and lead to new collaborations among academia and industry and will bring full vector magnetometry and torque capabilities to the Americas. Concrete plans are being developed to integrate the new tool in several graduate courses in Physics, MSEC, and Manufacturing Engineering each year and use the instrument for high school outreach activities and apprentice summer research programs in the College of Science and Engineering. The instrumentation development will be done by a graduate and undergraduate student. It is expected that the impact is much larger though once the tool is realized and tested with multiple graduate projects at Texas State and elsewhere benefiting from this unique capability. This instrument development award is to develop triaxial vibrating sample magnetometry (VSM) to measure all three components of the sample’s magnetic dipole moment simultaneously and allow for vector torque magnetometry as a function of temperature. Rather than designing a completely new instrument, the researcher will design and realize triaxial coil sets for two existing VSMs. The approach allows for a short runway, increases the adoptability of the new measurement tool benefitting from the existing user pool for both tools, and results in a large measurement parameter window (0-9 tesla, 2.8-1000 K). The method will be useful for the characterization of a wide range of materials. The project will directly enhance the research in 5 different academic programs (Physics, Chemistry, Manufacturing Engineering, Electrical Engineering, and MSEC). The realized vector torque magnetometer will enable researchers to study materials that have a complex magnetic anisotropy energy surface with multiple anisotropies originating from shape, strain, surface, step, flow, and a magnetic field applied during deposition. Such materials cannot be easily studied with a conventional torque magnetometer. Materials to be studied include oblique co-deposited NiFe films to be used in novel sensors and actuators, strained Fe doped epitaxial (InGa)2O3 films on anisotropic vicinal substrates, Nickel-Iron hydroxides and oxides that are currently being explored as electrode materials in lithium free batteries, and magnetic composites deposited by Magnetic Field Assisted Additive Manufacturing (MFAAM). MFAAM materials that are deposited by 2D (inkjet) or 3D (Fused Filament Fabrication) printing magnetic nanocomposites under applied magnetic field appear to have enhanced properties including a higher remanence, a larger susceptibility, and/or a stronger magnetic anisotropy. The coil sets and methods developed will be disseminated via the project’s website and peer-reviewed publications to allow other research groups to implement triaxial capability for their VSM.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.

这项主要的研究仪器奖为发展三轴振动磁力测定法（VSM）的发展提供了资金，以表征各向异性磁性材料。磁力计是一种允许磁性材料表征的仪器，例如粘在冰箱门上的磁铁。为了充分表征磁性材料，有必要测量磁偶极矩矢量的所有三个组件。然而，三轴VSM并未在欧洲，日本和俄罗斯过去尝试建立三轴VSM的欧洲，日本和俄罗斯的少数研究实验室。仪器开发允许在大温度和场范围内进行三轴测量。将要开发的矢量线圈集对于理解具有随场方向变化的磁性特性的各向异性材料的磁性非常重要。预计新工具将加强现有的研究并导致学术界和行业之间的新合作，并将为美洲带来完整的矢量磁力测定法和扭矩功能。正在制定混凝土计划，以将新工具整合到每年的物理，巨大企业会议和制造工程学的多个研究生课程中，并使用该工具进行高中外展活动和科学与工程学院的学徒夏季研究计划。仪器开发将由研究生和本科生完成。可以预期，一旦通过得克萨斯州立大学和其他地方的多个研究生项目实现和测试该工具，就会受益于这种独特的能力。该仪器开发奖是要开发三轴振动样品磁力测定法（VSM），以简单地测量样品的磁偶极矩的所有三个组件，并允许矢量扭矩磁力测定法作为温度的函数。研究人员不会设计一种全新的仪器，而是将设计并实现两个现有VSM的三轴线圈集。该方法允许短跑道，增加了新的测量工具的可采用性，从现有的用户池中可以从这两个工具中受益，并导致大量测量参数窗口（0-9 Tesla，2.8-1000 K）。该方法将有助于表征多种材料。该项目将直接增强5种不同的学术计划（物理，化学，制造工程，电气工程和企业会议）的研究。实现的矢量扭矩磁力计将使研究人员能够研究具有复杂的磁各向异性能表面具有多个各向异性能量表面的材料，具有多种各向异性，源自形状，应变，表面，步骤，流动，流动和沉积过程中施加的磁场。这种材料不能轻易使用常规的扭矩磁力计进行研究。要研究的材料包括用于新型传感器和执行器中的倾斜共同沉积的膜膜，在各向异性综合底物，镍铁羟基氧化物，镍铁羟基氧化物和当前被元素的电源材料中探索的镍铁羟基氧化物和磁性材料（由磁性组合材料）探索（磁性材料），并在磁性材料中探索（磁性材料）。由2D（喷墨）或3D（融合细丝制造）沉积的MFAAM材料在施加的磁场外观下打印磁性纳米复合材料具有增强的性能，包括较高的透明度，较大的敏感性和/或更强的磁动率。开发的线圈集和方法将通过该项目的网站传播，并经过同行评审的出版物，以允许其他研究小组为其VSM实施三轴功能。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响审查标准来通过评估来获得的支持。