MRI: Acquisition of a High Field, Wide Temperature Range Electrical, Magnetic and Thermal Properties Measurement System

MRI：获取高场、宽温度范围电、磁和热特性测量系统

• 批准号: 1532287
• 负责人: Pallavi Dhagat
• 金额: $ 54.41万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1532287&HistoricalAwards=false
• 关键词: MRI; Acquisition; Field; Wide; Temperature

The instrument acquisition provides state-of-the-art capability for measuring electrical, thermal and magnetic properties of a broad variety of materials, to enable next-generation information storage devices; high-speed electronics; lower-cost and higher-efficiency solar cells; high-energy physics infrastructure and medical imaging technologies to name a few. In addition, it will support industry-university partnership to develop new and advanced techniques for investigating materials. The equipment will fill a critical void in the materials research infrastructure in Oregon and be designated as a shared resource available to other academic institutions and regional small businesses. Graduate and undergraduate students participating in the research projects will gain experience in advanced measurement techniques on a platform widely used in research and development laboratories worldwide. The robustness and ease of use of the instrument will also enable enriching science outreach opportunities for high school and under-represented minority students in the community. The acquisition of the instrument enables turnkey as well as custom characterization of electrical, magnetic and thermal properties of a wide variety of materials, including semiconductor, multiferroic, magnetic and superconducting materials. Turnkey options available include state-of-the-art magnetometry, and thermal conductivity and electrical charge transport measurements over a wide range of temperature (1.8 K to 400 K) and magnetic field (0 to 14 T). The open hardware and software architecture of the system, amenable to customization, will permit development of new measurement techniques to support materials discovery as well as fundamental understanding of the physics underlying material behavior. Specifically, the systematic measurements and cutting-edge experiments enabled by the instrument will facilitate discovery and design of new materials with strong coupling between multiple properties including high-coercivity magnetostrictive materials; room-temperature multiferroic materials based on Aurivilius-phase or magnetoplumbite compounds; and metastable materials that promise higher photovoltaic and thermoelectric energy conversion efficiency. It will support the creation of new characterization techniques including atomic-resolution magnetic microscopy using vortex electron beams; sub-cellular imaging of live biological samples by magnetic particle imaging and advanced systems for measuring magnetostrictive and magnetoelectric properties of materials. It will lead to understanding of the fundamental physics underpinning electron-electron interactions in nanostructures; conduction processes in quantum-dot solids; and magnetoelectric coupling in multiferroic materials. Experiments using dielectrics to screen Coulomb interactions will provide compelling new tests of Luttinger liquid theory and Mott insulator gap theory in carbon nanotubes. And it will enable development of novel synthesis and manufacturing methods for 3D printed magnetic materials, multiferroics, quantum dot solids and niobium superconductors.

仪器的采购提供了测量各种材料的电，热和磁特性的最先进的能力，以实现下一代信息存储设备;高速电子产品;低成本和高效率的太阳能电池;高能物理基础设施和医学成像技术，仅举几例。此外，它将支持工业和大学的伙伴关系，以开发新的和先进的材料研究技术。这些设备将填补俄勒冈州材料研究基础设施的一个关键空白，并被指定为其他学术机构和地区小企业可用的共享资源。参与研究项目的研究生和本科生将在全球研发实验室广泛使用的平台上获得先进测量技术的经验。该工具的强大性和易用性也将使高中和社区中代表性不足的少数民族学生有更多的科学推广机会。该仪器的收购使交钥匙以及各种材料，包括半导体，多铁性，磁性和超导材料的电，磁和热特性的自定义表征成为可能。可用的交钥匙选项包括最先进的磁力测量以及在广泛的温度（1.8 K至400 K）和磁场（0至14 T）范围内的热导率和电荷传输测量。该系统的开放式硬件和软件架构可定制，将允许开发新的测量技术，以支持材料发现以及对材料行为物理基础的基本理解。具体而言，该仪器实现的系统测量和尖端实验将有助于发现和设计多种性能之间具有强耦合的新材料，包括高磁致伸缩材料;基于Aurivilius相或磁铅化合物的室温多铁性材料;以及有望提高光伏和热电能量转换效率的亚稳态材料。它将支持创建新的表征技术，包括使用涡旋电子束的原子分辨率磁显微镜;通过磁性粒子成像对活生物样品进行亚细胞成像，以及测量材料磁致伸缩和磁电特性的先进系统。它将导致理解的基本物理支撑的纳米结构中的电子-电子相互作用;量子点固体的传导过程;和磁电耦合在多铁性材料。实验使用的屏幕库仑相互作用将提供令人信服的新的测试Luttinger液体理论和莫特绝缘体间隙理论在碳纳米管。它将为3D打印磁性材料、多铁性材料、量子点固体和铌超导体开发新的合成和制造方法。