MRI: Acquisition of a Cryogen-Free Physical Property Measurement System for Research and Education at University of Puerto Rico at Mayaguez

技术摘要：我们希望获得一台先进的商用多功能仪器，用于纳米结构材料的电、磁和热测量。该无低温物理性能测量系统（PPMS）的研究和教育的建立将支持和加强波多黎各大学mayag<e:1> (UPRM)在纳米结构材料领域快速扩展的研究基础设施。所提出的PPMS是一种自动化无低温系统，用于测量各种物理性质，温度范围从1.6 ？325k，磁场高达8特斯拉。该仪器可测量磁矩、交流磁化率、电输运、磁阻和霍尔效应。这些是与材料科学和工程的大多数领域相关的物理性能测量和材料表征。这种无低温系统将在低温测量中降低运行成本。通常，为了进行这种测量，低温液氦必须从美国大陆运来，因为波多黎各没有当地的来源。海上长途运输不仅成本高，而且浪费了研究时间。无低温PPMS与我们在UPRM现有的研究基础设施是一个很好的匹配，从长远来看，它将大大节省成本，同时也为新的研究方向和学生的教育提供了一个很好的机会。拟议的工具将支持多样化和跨学科的正在进行的研究项目。拟议的PPMS系统支持的具体研究活动包括：1。磁性纳米结构阵列包合物材料的磁性和热电性。应用于自旋电子学的纳米结构材料。用于高矫顽力金属和铁氧体纳米结构数据存储介质的纳米磁性材料。低居里温度的磁性单分散纳米流体用于电子冷却的磁热效应。用于电磁干扰的磁性纳米复合材料。6. 磁性纳米颗粒的生物医学应用。7. 表面改性碳纳米管的结构-性能关系。MgB2的双间隙超导：掺杂和无序效应。9. 稀土掺杂高tc超导单晶的磁通钉接。10. 磁性纳米颗粒悬浮液对振荡和旋转磁场的响应。拟议的教育活动旨在增加和加强拉美裔人的教育和参与，特别是参加upm的本科生和研究生。需要PPMS的研究活动与upm的教学密切相关。该仪器将立即支持20多名本科生、20名研究生、2名博士后和7名教师的跨学科研究和材料科学与工程培训。现有课程和新开发的课程将立即受益于该工具。大约15%的仪器操作时间将用于教育和培训。此外，这一提议将对服务不足的波多黎各地区的大学预科学生及其教师的教育产生更广泛的影响。摘要我们提出了一种多功能的纳米结构材料的电、磁、热测量仪器。该无低温物理性能测量系统（PPMS）作为研究和教育设施的建立，将支持和加强波多黎各大学mayag<e:1> ez分校（UPRM）纳米结构材料领域快速扩展的研究基础设施。所提出的PPMS是一种自动化的无低温系统，用于在广泛的温度和磁场范围内测量各种物理性质。该仪器提供了与材料科学和工程的大多数领域相关的物理性能测量和材料表征。这种无低温系统将在低温测量中降低运行成本。通常进行这种测量，低温液氦必须从美国大陆运来，因为当地没有可用的来源。海上长途运输不仅成本高，而且浪费了研究时间。无低温PPMS与我们在UPRM现有的研究基础设施是一个很好的匹配，从长远来看，它将大大节省成本，同时也为新的研究方向和学生的教育提供了一个很好的机会。拟议的工具将支持多样化和跨学科的正在进行的研究项目。具体研究活动包括：1)磁性纳米结构阵列的笼形物材料的磁性和热电性，2)自旋电子学应用的纳米结构材料，3)用于数据存储介质的纳米结构磁性材料，4)用于电子冷却应用的磁性纳米流体的磁热效应，5)用于电磁干扰应用的磁性纳米复合材料，6)磁性纳米颗粒的生物医学应用，7)表面改性碳纳米管的结构-性能关系，8)MgB2超导体中的掺杂和无序效应，9)稀土掺杂高tc超导单晶中的磁钉钉，10)聚合物溶液和液晶中的磁性纳米颗粒悬浮液。拟议的教育活动旨在增加和加强拉美裔人的教育和参与，特别是参加upm的本科生和研究生。需要PPMS的研究活动与教学密切相关。该仪器将立即支持跨学科研究和材料科学与工程培训。现有课程和新开发的课程将立即受益于该工具。大约15%的仪器操作时间将用于教育和培训。此外，这一提议将对服务不足的波多黎各地区的大学预科学生及其教师的教育产生更广泛的影响。

Technical AbstractWe propose to acquire a cutting-edge commercial multi-function instrument for electrical, magnetic, and thermal measurement of nanostructured materials. The establishment of this Cryogen-free Physical Property Measurement System (PPMS) for research and education will support and enhance the rapidly expanding research infrastructure in the field of nanostructured materials at the University of Puerto Rico at Mayagüez (UPRM). The proposed PPMS is an automated cryogen-free system for the measurement of a variety of physical properties, over a range of temperatures from 1.6 ? 325 K, and with magnetic fields up to 8 Tesla. The instrument provides for measurement of the magnetic moment, AC susceptibility, electrical transport, magnetoresistance and Hall effect. These are physical property measurements and materials characterizations which are relevant to most fields in materials science and engineering.This cryogen-free system will incur low operating costs in low temperature measurements. Usually for such measurements, the cryogenic liquid helium must be conveyed from the US mainland, since no local source is available in Puerto Rico. The long distance transport by sea results in high cost and wasted research time. The cryogen-free PPMS is a good match for our existing research infrastructure at UPRM, and will provide significant cost savings in the long term while also providing a great opportunity for new research directions and for the education of our students. The proposed instrument will support diverse and interdisciplinary ongoing research projects. Specific research activities supported by the proposed PPMS system include: 1. Magnetism and thermoelectricity of clathrate materials with magnetic nanostructured arrays.2. Nanostructured materials for spintronics applications.3. Nanostructured magnetic materials for data storage media of high-coercivity metallic and ferrite nanostructures.4. Magnetocaloric effect using a magnetic monodisperse nanofluid with a Low Curie temperature for electronic cooling applications5. Magnetic nano-composites for electro-magnetic interference applications. 6. Biomedicine application of magnetic nanoparticles. 7. Structure-property relationships of surface modified carbon nanotubes.8. Two-gap superconductivity in MgB2: doping and disorder effects. 9. Flux pinning in the rare-earth doped high-Tc superconducting single crystals. 10. Response of magnetic nanoparticle suspensions to oscillating and rotating magnetic fields.The proposed education activities aim to increase and enhance the education and participation of Hispanics, especially undergraduate and graduate students attending the UPRM. Research activities requiring PPMS are intimately linked with teaching at UPRM. This instrument will immediately support the interdisciplinary research and materials science and engineering training for over 20 undergrads, 20 graduate students, 2 postdoctoral researchers and 7 faculty. Pre-existing courses and new developed courses will immediately benefit from the instrument. Approximately 15% of the instrument operating time will be dedicated to education and training. In addition this proposal will generate a broader impact on education of pre-college students and their teachers in underserved Puerto Rico areas. Non-technical AbstractWe propose to acquire a multi-function instrument for electrical, magnetic, and thermal measurement of nanostructured materials. The establishment of this Cryogen-free Physical Property Measurement System (PPMS) as a facility for research and education will support and enhance the rapidly expanding research infrastructure in the field of nanostructured materials at the University of Puerto Rico at Mayagüez (UPRM). The proposed PPMS is an automated cryogen-free system for the measurement of a variety of physical properties over a wide range of temperatures and magnetic fields. The instrument provides for physical property measurements and materials characterizations which are relevant to most fields in materials science and engineering.This cryogen-free system will incur low operating costs in low temperature measurements. Usually for such measurements, the cryogenic liquid helium must be conveyed from the US mainland, since no local source is available. The long distance transport by sea results in high cost and wasted research time. The cryogen-free PPMS is a good match for our existing research infrastructure at UPRM, and will provide significant cost savings in the long term while also providing a great opportunity for new research directions and for the education of our students.The proposed instrument will support diverse and interdisciplinary ongoing research projects. Specific research activities include: 1) magnetism and thermoelectricity of clathrate materials with magnetic nanostructured arrays, 2) nanostructured materials for spintronics applications, 3) nanostructured magnetic materials for application on the data storage media, 4) magnetocaloric effect using a magnetic nanofluid for electronic cooling applications, 5) magnetic nano-composites for electro-magnetic interference applications, 6) biomedicine application of magnetic nanoparticles, 7) structure-property relationships of surface modified carbon nanotubes, 8) doping and disorder effects in MgB2 superconductors, 9) flux pinning in the rare-earth doped high-Tc superconducting single crystals, and 10) magnetic nanoparticle suspensions in polymer solutions and liquid crystals. The proposed education activities aim to increase and enhance the education and participation of Hispanics, especially undergraduate and graduate students attending the UPRM. Research activities requiring PPMS are intimately linked with teaching. This instrument will immediately support the interdisciplinary research and materials science and engineering training. Pre-existing courses and new developed courses will immediately benefit from the instrument. Approximately 15% of the instrument operating time will be dedicated to education and training. In addition this proposal will generate a broader impact on education of pre-college students and their teachers in underserved Puerto Rico areas.