Acquisition of a Laboratory X-Ray Diffraction System with a Rotating Anode Generator

利用学术研究基础设施方案的资金，将购买一个由旋转阳极X射线发生器和发电机两侧的两个不同衍射系统组成的X射线设施。一个衍射单元将是一个四圈衍射仪，用于精确测定薄膜、单晶和粉末样品的晶格参数和结构。第二个衍射单元将包括一个先进的二维阵列探测器，用于从生物和薄膜样品进行小角X射线散射。该装置将被用来研究：1)稀土内体富勒烯和富勒烯包裹的金属团簇的结构，与超导和电荷密度波有关的低维混价化合物的研究，3)独特的van der Waals C60固体的各种性质，4)磁性多层薄膜，5)用化学气相沉积和离子注入技术制备的金刚石薄膜，6)在晶体和非晶态衬底上生长薄的铁电薄膜，7)调节蛋白的遗传特征和阻遏蛋白的生物化学和生物学，8)天然矿物的热力学性质。化学、电气工程、生物科学、材料科学和地质系的科学家将使用具有两种类型的衍射仪的现代X射线设备来研究各种材料。所研究的材料将包括富勒烯、金刚石薄膜、抑制蛋白、磁性多层膜、铁电薄膜和天然矿物。

A X-ray facility consisting of a rotating anode X-ray generator and two different diffraction systems on opposite sides of the generator will be acquired with the funds from the Academic Research Infrastructure Program. One diffraction unit will be a 4-circle diffractometer for accurate lattice parameter and structural determinations of thin films, single crystals, and powder samples. A second diffraction unit will involve an advanced 2-dimensional array detector for small angle X-ray scattering from biological and thin film samples. The facility will be employed to study: 1) the structure of lanthanide endohedral fulleneres and fullerene-encapsulated metal clusters, the study of low-dimensional mixed-valence compounds associated with superconduct-ivity and and charge density waves, 3) various properties of the unique van der Waals C60 solids, 4) magnetic multilayer thin films, 5) diamond thin films prepared by chemical vapor deposition and ion- implantation techniques, 6) growth of thin ferroelectric films on crystalline and amorphous substrates, 7) genetic features of regulatory proteins and the biochemistry and biology of repressor proteins, 8) the thermodynamic properties of natural minerals. A modern X-ray facility with two types of diffractometers will be employed to study a diverse range of materials by scientists in the Chemistry, Electrical Engineering, Biosciences, Materials Science and Geology Departments. The materials studied will include fullerenes, diamond thin films, repressor proteins, magnetic multilayers, ferroelectric thin films, and natural minerals.