MRI: Acquisition of a Magnetic Property Measurements System

MRI：获取磁特性测量系统

• 批准号: 1828420
• 负责人: Kai Liu
• 金额: $ 36.66万
• 依托单位: Georgetown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-08-15 至 2021-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1828420&HistoricalAwards=false
• 关键词: MRI; Acquisition; Magnetic; Property; Measurements

This Major Research Instrumentation award will provide support for the acquisition of a state-of-the-art magnetometer that combines extreme sensitivity with multiple measurement modes. The instrument will meet a critical need for cutting-edge magnetic characterization, particularly for a wide variety of functional magnetic and superconducting nanostructures, on the Georgetown campus and in the greater District of Columbia area. The research projects that will be enabled by this instrument have potentially major technological impacts in low power nanoelectronics, quantum computation, magnetic recording, magnetic semiconductors, nanophotonics, catalysis and bioinorganic chemistry, magnetic resonance imaging, and hyperthermia therapeutics. The instrument will have a strong impact on broadening participation of underrepresented groups in STEM fields from a broad user base at Georgetown and nearby institutions. It will also be utilized to provide research experience for undergraduate students through several partner REU programs. This Major Research Instrumentation award support the acquisition of a Magnetic Property Measurement System (MPMS3), with unique technical features that are critical to support many current and future research efforts at Georgetown University. The extreme sensitivity, wide magnetic field range and temperature span, versatile operation modes, and cryogen-free capability are essential for studying a wide variety of technologically important magnetic and superconducting materials. The interdisciplinary research projects that will be enabled by this instrument include topological spin textures, chiral Majorana fermions, next generation heat-assisted magnetic recording media, single-molecule magnets, magnetic semiconductors, biomedical applications of magnetic nanoparticles, structure-property relationships in f-element materials, paramagnetic molecular complexes in catalysis and bioinorganic chemistry, and molecular spintronics based computational and memory devices. The instrument will be integrated with graduate and undergraduate curriculum to provide students with hands-on learning experiences, and promote teaching, learning and training.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.

该重大研究仪器奖将为购买最先进的磁力计提供支持，该磁力计将极高的灵敏度与多种测量模式相结合。该仪器将满足乔治城校区和哥伦比亚特区对尖端磁性表征的关键需求，特别是对各种功能磁性和超导纳米结构的需求。该仪器将支持的研究项目在低功率纳米电子学、量子计算、磁记录、磁性半导体、纳米光子学、催化和生物无机化学、磁共振成像和热疗等领域具有潜在的重大技术影响。该工具将对乔治敦大学和附近机构的广泛用户群扩大 STEM 领域代表性不足的群体的参与产生重大影响。它还将用于通过几个 REU 合作伙伴项目为本科生提供研究经验。 该重大研究仪器奖支持购买磁性能测量系统 (MPMS3)，该系统具有独特的技术功能，对于支持乔治城大学当前和未来的许多研究工作至关重要。极高的灵敏度、宽的磁场范围和温度跨度、多功能的操作模式和无冷冻剂能力对于研究各种技术上重要的磁性和超导材料至关重要。该仪器将支持的跨学科研究项目包括拓扑自旋纹理、手性马约拉纳费米子、下一代热辅助磁记录介质、单分子磁体、磁性半导体、磁性纳米颗粒的生物医学应用、f-元素材料、催化和生物无机化学中的顺磁分子复合物以及基于分子自旋电子学的计算和存储设备。该工具将与研究生和本科生课程相结合，为学生提供实践学习经验，并促进教学、学习和培训。该奖项反映了 NSF 的法定使命，并通过利用基金会的智力优势和更广泛的评估进行评估，认为值得支持。影响审查标准。

项目成果

Tuning the Properties of Zero-Field Room Temperature Ferromagnetic Skyrmions by Interlayer Exchange Coupling

通过层间交换耦合调节零场室温铁磁斯格明子的特性

• DOI: 10.1021/acs.nanolett.0c00137
• 发表时间: 2020-07
• 期刊: Nano Letters
• 影响因子: 10.8
• 作者: Lo Conte, Roberto;Nandy, Ashis K.;Chen, Gong;Fernandes Cauduro, Andre L.;Maity, Ajanta;Ophus, Colin;Chen, Zhijie;N’Diaye, Alpha T.;Liu, Kai;Schmid, Andreas K.;et al
• 通讯作者: et al

Ionically driven synthesis and exchange bias in Mn4N/MnN x heterostructures

Mn4N/MnN x 异质结构中的离子驱动合成和交换偏压

• DOI: 10.1063/5.0165895
• 发表时间: 2023-08
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Chen, Zhijie;Jensen, Christopher J.;Liu, Chen;Zhang, Xixiang;Liu, Kai
• 通讯作者: Liu, Kai

Chemical Route to Yb 14 MgSb 11 Composites with Nanosized Iron Inclusions for the Reduction of Thermal Conductivity

用于降低热导率的具有纳米铁夹杂物的 Yb 14 MgSb 11 复合材料的化学路线

• DOI: 10.1021/acsaem.1c00163
• 发表时间: 2021-04
• 期刊: ACS Applied Energy Materials
• 影响因子: 6.4
• 作者: Perez, Christopher J.;Chen, Zhijie;Beeson, Willie B.;Chanakian, Sevan;Liu, Kai;Bux, Sabah K.;Kauzlarich, Susan M.
• 通讯作者: Kauzlarich, Susan M.

Nitrogen-Based Magneto-ionic Manipulation of Exchange Bias in CoFe/MnN Heterostructures

CoFe/MnN 异质结构中交换偏压的氮基磁离子操控

• DOI: 10.1021/acsnano.2c12702
• 发表时间: 2023-03-25
• 期刊: ACS Nano
• 影响因子: 17.1
• 作者: C. J. Jensen;A. Quintana;P. Quarterman;A. Grutter;P. Balakrishnan;Huairuo Zhang;A. Davydov;Xixiang Zhang;Kai Liu
• 通讯作者: Kai Liu

Voltage-driven motion of nitrogen ions: a new paradigm for magneto-ionics

氮离子的电压驱动运动：磁离子学的新范例

• DOI: 10.1038/s41467-020-19758-x
• 发表时间: 2020-11-18
• 期刊: Nature Communications
• 影响因子: 16.6
• 作者: de Rojas J;Quintana A;Lopeandía A;Salguero J;Muñiz B;Ibrahim F;Chshiev M;Nicolenco A;Liedke MO;Butterling M;Wagner A;Sireus V;Abad L;Jensen CJ;Liu K;Nogués J;Costa-Krämer JL;Menéndez E;Sort J
• 通讯作者: Sort J