MRI: Acquisition of a Physical Properties Measurement System With 9 Tesla Magnetometer (Dynacool) for Research and Teaching at VCU

MRI：采购带有 9 特斯拉磁力计 (Dynacool) 的物理特性测量系统，用于弗吉尼亚联邦大学的研究和教学

• 批准号: 1726617
• 负责人: Ravi Hadimani
• 金额: $ 28.16万
• 依托单位: Virginia Commonwealth University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1726617&HistoricalAwards=false
• 关键词: MRI; Acquisition; Physical; Properties; Measurement

This Major Research Instrumentation award will help acquire a Physical Properties Measurement System (PPMS) with autorotation, supplementary electrical measurements and low and high temperature capabilities coupled with a Vibrating Sample Magnetometer (VSM) at Virginia Commonwealth University (VCU). Additionally, the cryogen-free PPMS/VSM would enable making robust low temperature measurements without requiring liquid helium to extremely sensitive magnetic measurements. The equipment will help enhance research and teaching efforts at VCU and nearby universities including those related to Smart Materials, Electron Theory of Solids, Solid State Physics and Experimental techniques and Foundations of Nanoscience. Improved facilities at VCU will impact high tech skills imparted to both regular and part time students which eventually will help industries located in northeast USA.This major instrumentation will help support researchers at VCU who have developed research programs in which fundamental properties of magnetic materials are used in devising novel applications. These materials are being studied at different length scales for applications ranging from magnetostrictive sonar transducers, self-sensing magnetoelectric actuators, spintronic devices, non-volatile memory, magnetic nanoparticular catalysts, magnetic nanoparticles for biomedical applications such as magnetic hyperthermia for oncological treatment and nanoscale sensors. The fundamental scientific contributions include understanding anisotropic behavior of magnetic and magnetostrictive materials along different crystallographic orientations, magnetoelectric behavior of multifunctional magnetostrictive-piezoelectric composites at multiple length scales, experimental understanding of self-assembled ordered arrays of magnetic nanowires and quantum dots produced by selective chemical or physical electrodeposition on nm-sized pores of an alumina film and magnetic study of nano-manufactured nanoparticles of ferrites and gadolinium based materials. These activities require a Physical Properties Measurement System (PPMS) with supplementary Vibration Sample Magnetometer (VSM) capable of measuring magneto-electric, mangetocaloric and magneto-optic measurements at both low and high temperature and fields. Additionally, the use of a liquid helium-free PPMS would enable robust low temperature measurements. This will keep the operating cost very low while allowing sensitive magnetic measurements (better than 10-6 emu) and observation of coherent spin transport phenomena which are difficult to observe at elevated temperatures.

这项重大研究仪器奖将有助于获得物理特性测量系统（PPMS）与自转，补充电气测量和低温和高温能力，再加上振动样品磁强计（VSM）在弗吉尼亚联邦大学（VCU）。此外，无致冷剂的PPMS/VSM将能够进行稳健的低温测量，而不需要液氦来进行极其敏感的磁性测量。这些设备将有助于加强VCU和附近大学的研究和教学工作，包括与智能材料，固体电子理论，固态物理和实验技术以及纳米科学基础相关的研究和教学工作。在VCU改善设施将影响高科技技能传授给两个定期和兼职的学生，最终将有助于位于美国东北部的行业。这主要仪器将有助于支持研究人员在VCU谁开发的研究计划，其中磁性材料的基本属性被用于设计新的应用。这些材料正在研究在不同的长度尺度的应用范围从磁致伸缩声纳换能器，自感知磁电致动器，自旋电子器件，非易失性存储器，磁性纳米粒子催化剂，磁性纳米粒子的生物医学应用，如磁热疗肿瘤治疗和纳米传感器。基本科学贡献包括理解磁性和磁致伸缩材料沿沿着不同晶体取向的各向异性行为，多功能磁致伸缩-压电复合材料在多个长度尺度上的磁电行为，实验理解的自组装有序阵列的磁性纳米线和量子点产生的选择性化学或物理电沉积纳米-氧化铝膜的孔径和铁氧体和钆基材料的纳米制造的纳米颗粒的磁性研究。这些活动需要一个物理特性测量系统，并配有能够在低温和高温以及磁场下测量磁电、磁热和磁光测量值的辅助振动样品磁强计。此外，使用不含液态氦的PPMS将能够实现稳健的低温测量。这将保持非常低的运行成本，同时允许灵敏的磁测量（优于10-6 emu）和在高温下难以观察的相干自旋输运现象的观察。

项目成果

Synthesis and characterization of Fe3O4@Cs@Ag nanocomposite and its use in the production of magnetic and antibacterial nanofibrous membranes

• DOI: 10.1016/j.apsusc.2020.146332
• 发表时间: 2020-08
• 期刊: Applied Surface Science
• 影响因子: 6.7
• 作者: A. Yıldız;Derman Vatansever Bayramol;Rıza Atav;A. Agirgan;Mine Aydin Kurç;Uğur Ergünay;Carl R. Mayer;Ravi L. Hadimani

Phase transition and magnetocaloric effect in particulate Fe-Rh alloys

• DOI: 10.1007/s10853-020-04921-y
• 发表时间: 2020-06-15
• 期刊: JOURNAL OF MATERIALS SCIENCE
• 影响因子: 4.5
• 作者: Cao, Yutao;Yuan, Yue;Fu, Hao
• 通讯作者: Fu, Hao

Differential effect of magnetic alignment on additive manufacturing of magnetocaloric particles

磁排列对磁热颗粒增材制造的差异化影响

• DOI: 10.1063/1.5130028
• 发表时间: 2020
• 期刊: AIP Advances
• 影响因子: 1.6
• 作者: Al-Milaji, Karam N.;Gupta, Shalabh;Pecharsky, Vitalij K.;Barua, Radhika;Zhao, Hong;Hadimani, Ravi L.
• 通讯作者: Hadimani, Ravi L.

Magnetocaloric Effect of Micro- and Nanoparticles of Gd5Si4

• DOI: 10.1007/s11837-019-03626-1
• 发表时间: 2019-07
• 期刊: JOM
• 影响因子: 2.6
• 作者: S. Harstad;A. El-Gendy;S. Gupta;V. Pecharsky;R. Hadimani

Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles

• DOI: 10.1016/j.matlet.2019.04.013
• 发表时间: 2019-10
• 期刊: Materials Letters
• 影响因子: 3
• 作者: Pritom J. Bora;Shalabh Gupta;V. Pecharsky;K. Vinoy;Praveen C Ramamurthy;R. Hadimani