MRI: X-ray Diffractometer for Material Research

MRI：用于材料研究的 X 射线衍射仪

• 批准号: 0421141
• 负责人: Rajeswari Kolagani
• 金额: $ 26.72万
• 依托单位: Towson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0421141&HistoricalAwards=false
• 关键词: MRI; ray; Diffractometer; Material; Research

This proposal requests funds to acquire a 4-circle x-ray diffractometer for structural analysis of thin films, single crystals and powder samples. This instrument will be a key component of research projects in several multidisciplinary areas such as Materials Physics, Condensed Matter Physics, Nanotechnology, Geosciences and Chemistry. The materials physics projects include structural characterization of epitaxial thin films of functional metal oxides grown by pulsed laser deposition. The thin films which will be studied include colossal magnetoresistive manganite materials for infrared detector and magnetic sensor applications and charge-ordered manganites for photonic device applications. Besides using the diffractometer as a diagnostics tool for establishing phase purity and crystalline quality of epitaxial thin films, detailed evaluation of lattice parameters will be undertaken to study lattice-mismatch strain effects in several material systems. Structural analysis using the x-ray diffractometer will also form an essential component in our lattice engineering efforts to grow functional oxide materials on technologically important substrates such as Silicon, employing buffer and template layer schemes. The nanotechnology projects which will use this instrument include study of mechanical properties of thin films using atomic force microscopy and x-ray micro beam techniques and growth of macromolecular crystals. The x-ray diffractometer will also form a vital component in several geology research projects. The use of this instrument will have a major impact on the characterization of the mineralogy of fine-grained sediments in the investigation of the evolution dynamics of geological systems. Another geology project which requires x-ray diffraction analysis is the evaluation of organic shales as potential sources of oil and natural gas by estimating the peak burial temperatures of petroleum source rocks using the illite crystallinity index method. In addition to the above mentioned projects in physics and geosciences, the x-ray diffractometer will also contribute to several research projects in the Chemistry department including Forensic Chemistry, nano surface processes, self assembly of mono-layers on template surfaces, solid state phase transformations catalytic surface chemistry and materials chemistry. The x-ray diffractometer will also be used to enhance undergraduate education through laboratory instruction as well as through undergraduate research projects. X-ray diffraction experiments will be implemented in advanced physics laboratory courses and upper level geology courses. Besides Towson University, several other institutions in the vicinity are expected to benefit from this instrument via collaborative research.This proposal requests funds to acquire an x-ray diffractometer for analyzing the structural properties of materials in the form of thin films, powders and single crystals. This instrument will be a key component of research projects in several multidisciplinary areas such as Materials Physics, Condensed Matter Physics, Nanotechnology, Geosciences and Chemistry at Towson University. The materials physics projects focus on the development of novel materials for technological applications such as electronic sensors for sensing temperature and magnetic field and nano-structured photonic materials for optical communications and computing. The development of these novel materials involve studies of their crystal structure by x-ray diffraction using the proposed instrument. The x-ray diffractometer will also form a vital component in several geology research projects. The projects include characterization of trace elements in fine-grained sediments to study the evolution and dynamics of geological systems and evaluating the potential of organic-rich shales as source rocks for oil and natural gas by estimating the peak burial temperatures of petroleum source rocks. The x-ray diffractometer will also contribute to several research projects in the Chemistry department including Forensic Chemistry. In addition to its use in research projects, the x-ray diffractometer will be used to enhance undergraduate education through laboratory instruction as well as through undergraduate research projects. X-ray diffraction experiments will be implemented in advanced physics laboratory courses and upper level geology courses. Besides Towson University, several other institutions in the vicinity are expected to benefit from this instrument via collaborative research.

该建议要求资金获得4圈X射线衍射仪，以对薄膜，单晶和粉末样品进行结构分析。该仪器将是多个多学科领域的研究项目的关键组成部分，例如材料物理，凝结物理学，纳米技术，地球科学和化学。材料物理项目包括通过脉冲激光沉积生长的功能性金属氧化物的外延薄膜的结构表征。将研究的薄膜包括用于红外检测器和磁性传感器应用以及用于光子设备应用的磁性磁力材料以及电荷订购的锰矿。 除了使用衍射仪作为诊断工具以建立外延薄膜的相纯度和结晶质量外，还将对晶格参数进行详细评估，以研究几种材料系统中的晶格 - 匹配菌株效应。使用X射线衍射仪的结构分析还将在我们的晶格工程工作中构成一个必不可少的组成部分，以在技术上重要的底物（例如硅）上种植功能性氧化物材料，例如使用缓冲液和模板层方案。 使用该仪器的纳米技术项目包括使用原子力显微镜和X射线微束技术和大分子晶体的生长研究薄膜的机械性能。 X射线衍射仪还将在几个地质研究项目中形成重要组成部分。 在研究地质系统的演化动力学时，该仪器的使用将对细粒沉积物的矿物学的表征产生重大影响。需要X射线衍射分析的另一个地质项目是通过使用Illite Crystallination指数方法估算石油源岩石的峰值埋葬温度，将有机页岩评估为石油和天然气的潜在来源。除了上述物理和地球科学领域的上述项目外，X射线衍射仪还将为化学系的几个研究项目做出贡献催化表面化学和材料化学。 X射线衍射仪还将通过实验室教学以及通过本科研究项目来增强本科教育。 X射线衍射实验将在高级物理实验室课程和上层地质课程中实施。除陶森大学外，预计附近的其他几个机构还将通过协作研究从该工具中受益。该提案要求资金以薄膜，粉末和单晶形式获得X射线衍射仪，以分析材料的结构性特性。该仪器将是多个多学科领域的研究项目的关键组成部分，例如材料物理，凝结物理学，纳米技术，纳米技术，地球科学和化学。材料物理项目的重点是开发用于技术应用的新型材料，例如用于传感温度和磁场的电子传感器以及用于光学通信和计算的纳米结构的光子材料。 这些新型材料的开发涉及使用所提出的仪器通过X射线衍射研究其晶体结构。 X射线衍射仪还将在几个地质研究项目中形成重要组成部分。 这些项目包括在细粒沉积物中表征痕量元素，以研究地质系统的演变和动力学，并通过估计石油源岩石的峰值埋葬温度来评估有机富含有机富的页岩作为石油和天然气的潜在。 X射线衍射仪还将为化学系的几个研究项目做出贡献，包括法医化学。除了在研究项目中使用外，X射线衍射仪还将使用实验室教学以及通过本科研究项目来增强本科教育。 X射线衍射实验将在高级物理实验室课程和上层地质课程中实施。除了陶森大学，预计附近的其他几个机构将通过合作研究从该工具中受益。