MRI: Acquisition of a Physical Property Measurement System for Research and Education

MRI：获取用于研究和教育的物理特性测量系统

• 批准号: 0619702
• 负责人: Thomas Pekarek
• 金额: $ 26.98万
• 依托单位: University of North Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0619702&HistoricalAwards=false
• 关键词: MRI; Acquisition; Physical; Property; Measurement

Technical AbstractThe University of North Florida will acquire a new Physical Property Measurement System (PPMS). The PPMS is capable of making DC & AC electrical transport and heat capacity measurements over a 0.4 to 400 K temperature range in fields up to 9 Tesla. Research projects include (1) probing the ground state electronic levels to provide critical information needed to restrain adjustable parameters in the theory for several new III-VI Diluted Magnetic Semiconductors (DMS), (2) establishing if a charge density wave is involved in the prominent thermal hysteresis in In1 xMnxSe, (3) investigating reports of room-temperature ferromagnetism in a semiconductor (Zn1 xCrxTe), (4) helping identify ferromagnetic transition temperatures in nanostructured GdAl2 systems, and (5) continuing investigations of new materials as we explore the new class of layered III-VI DMS. The PPMS will affect local high school teachers and a host of undergraduate students at the University of North Florida involved in research activities as well as through new high-quality experiments in the senior-level undergraduate Advanced Physics Lab. This major instrumentation will also impact graduate and post-doctoral students at collaborating graduate universities. Lay AbstractThe Physical Property Measurement System (PPMS) can acquire the large amount of data needed to characterize new materials that are being investigated for potential application in the next generations of solid state devices. Significant advances in technology have been made by the discovery of useful properties of new materials. The combination of several experimental techniques, automation, and low cost into this single instrument (the PPMS) results in a very powerful research tool capable of providing the high-quality data needed to explore whole new classes of materials. The new Physical Property Measurement System at the University of North Florida will lead to a more comprehensive analysis of the semiconducting systems and nano-materials under study and expand the scope of research into currently inaccessible areas. The PPMS will affect local high school teachers and a host of undergraduate students at the University of North Florida involved in research activities as well as through new high-quality experiments in the senior-level undergraduate Advanced Physics Lab. This major instrumentation will also impact graduate and post-doctoral students at collaborating graduate universities. Potential applications for the materials currently being investigated include infra-red and night vision devices, optical switching, memory chips, and new surfaces for high capacity hard drives among others.

技术摘要北佛罗里达大学将购买一套新的物理特性测量系统（PPMS）。 PPMS 能够在 0.4 至 400 K 温度范围内、高达 9 特斯拉的磁场中进行直流和交流电传输和热容测量。 研究项目包括 (1) 探测基态电子能级，以提供限制几种新型 III-VI 稀磁半导体 (DMS) 理论中可调参数所需的关键信息，(2) 确定电荷密度波是否参与其中In1 xMnxSe 中显着的热滞现象，(3) 研究半导体 (Zn1 xCrxTe) 中的室温铁磁性的报告，(4) 帮助确定纳米结构 GdAl2 系统中的铁磁性转变温度，以及(5) 继续研究新材料，探索新型层状 III-VI DMS。 PPMS 将影响当地高中教师和北佛罗里达大学的众多本科生，他们参与研究活动以及在高级本科生高级物理实验室进行新的高质量实验。 这一主要仪器还将影响合作研究生大学的研究生和博士后学生。 摘要物理特性测量系统 (PPMS) 可以获取表征新材料所需的大量数据，这些新材料正在研究其在下一代固态器件中的潜在应用。 新材料有用特性的发现使技术取得了重大进步。 这种单一仪器（PPMS）将多种实验技术、自动化和低成本相结合，形成了一种非常强大的研究工具，能够提供探索全新材料类别所需的高质量数据。 北佛罗里达大学的新物理特性测量系统将对正在研究的半导体系统和纳米材料进行更全面的分析，并将研究范围扩大到目前无法进入的领域。 PPMS 将影响当地高中教师和北佛罗里达大学的众多本科生，他们参与研究活动以及在高级本科生高级物理实验室进行新的高质量实验。 这一主要仪器还将影响合作研究生大学的研究生和博士后学生。 目前正在研究的材料的潜在应用包括红外和夜视设备、光学开关、存储芯片以及高容量硬盘驱动器的新表面等。