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.

该提案要求提供资金，以购置一台用于薄膜、单晶和粉末样品结构分析的四圆X射线衍射仪。该仪器将成为材料物理、凝聚态物理、纳米技术、地球科学和化学等多学科领域研究项目的关键组成部分。材料物理项目包括用脉冲激光沉积法生长的功能性金属氧化物外延薄膜的结构表征。将研究的薄膜包括用于红外探测器和磁传感器应用的巨磁电阻锰氧化物材料以及用于光子器件应用的电荷有序锰氧化物。 除了使用衍射仪作为诊断工具，建立相纯度和外延薄膜的结晶质量，晶格参数的详细评估将进行研究晶格失配应变在几种材料系统的影响。使用X射线衍射仪的结构分析也将成为我们晶格工程工作的重要组成部分，以在技术上重要的衬底（如硅）上生长功能氧化物材料，采用缓冲层和模板层方案。 将使用这一仪器的纳米技术项目包括使用原子力显微镜和x射线微束技术研究薄膜的机械性能以及大分子晶体的生长。X射线衍射仪也将成为几个地质研究项目的重要组成部分。 该仪器的使用将对地质系统演化动力学研究中细粒沉积物的矿物学特性产生重大影响。另一个需要x射线衍射分析的地质学项目是通过使用伊利石结晶度指数方法估计石油源岩的峰值埋藏温度来评估有机页岩作为石油和天然气的潜在来源。除了上述物理和地球科学项目外，X射线衍射仪还将为化学系的几个研究项目做出贡献，包括法医化学，纳米表面工艺，模板表面单层自组装，固态相变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和本科生研究项目来加强本科生教育。X射线衍射实验将在高级物理实验课程和高级地质课程中实施。除了陶森大学之外，附近的其他几个机构也有望通过合作研究从这台仪器中受益。该提案要求获得资金，以购买一台X射线衍射仪，用于分析薄膜、粉末和单晶形式的材料的结构特性。该仪器将成为陶森大学材料物理、凝聚态物理、纳米技术、地球科学和化学等多学科领域研究项目的关键组成部分。材料物理学项目侧重于开发用于技术应用的新型材料，例如用于感测温度和磁场的电子传感器以及用于光通信和计算的纳米结构光子材料。 这些新材料的开发涉及使用所提出的仪器通过X射线衍射对其晶体结构的研究。X射线衍射仪也将成为几个地质研究项目的重要组成部分。 这些项目包括确定细粒沉积物中微量元素的特征，以研究地质系统的演变和动力学，并通过估计石油源岩的最高埋藏温度，评价富含有机物的页岩作为石油和天然气源岩的潜力。X射线衍射仪还将有助于化学系的几个研究项目，包括法医化学。除了在研究项目中使用外，X射线衍射仪还将通过实验室教学和本科生研究项目来加强本科生教育。X射线衍射实验将在高级物理实验课程和高级地质课程中实施。除了陶森大学，附近的其他几个机构预计将通过合作研究从这一仪器中受益。