Acquisition of a Variable Temperature Four-Circle X-Ray Diffraction System

9977614 Eom本项目将利用主要研究仪器计划的支持，获得一个可变温度四圆X射线衍射系统，用作北卡罗来纳州研究三角区内的共享设施。 一个多功能的系统，满足所有的实验要求已经确定。它由来自三个不同供应商的关键组件组成：（1）18千瓦旋转阳极X射线发生器（Rigaku UltraX 18 SFHB），（2）四圆测角仪（Huber 430-440-512.1），（3）石墨和Ge单色器和填充He的光束路径、检测器、光学台、辐射屏蔽外壳、电子器件和控制及分析软件（Blake Industries），（4）低温（6.5- 350 K）低温恒温器和压缩机（APD cryogenics CSW-202 G），和（5）高温反应室（RT - 900 ℃）（Enraf-Nonius）。该仪器将用于进行原位和非原位X射线衍射实验，结合电和磁性能测量，以研究晶体结构，三维应变状态，缺陷，相变，形态及其在材料性能中的作用。 它还将用于监测现场的固-固和固-气反应，以确定反应发生的条件和机制。 这将有助于新型固态材料的合成和制造以及对其结构和电磁性能的研究。 该仪器将提高来自杜克大学和北卡罗来纳大学三个系的五名成员的研究能力，并显着增强杜克大学和北卡罗来纳大学材料科学项目的教育使命。 变温四圆X射线衍射系统是X射线衍射和分析课程的实验室组成部分的理想仪器，将用于培训杜克和剑桥的学生最先进的材料表征。 它还将为北卡罗来纳州研究三角区的其他研究机构和行业提供外展使命。纳米结构和薄膜新材料是国家的利益，因为它们适用于各种各样的电子，磁性和光学器件。 原子尺度上的材料结构分析对于理解材料性质非常重要。 此外，它极大地促进了新材料的合成和基本物理现象的研究。 将使用主要研究仪器计划资金获得的变温四圆x射线衍射系统将提高北卡罗来纳州研究三角区研究人员的研究能力，并为培训学生提供最先进的材料表征技术。

9977614EomThis project will use support from the Major Research Instrumentation program to acquire a variable temperature four-circle x-ray diffraction system to be used as a shared facility within North Carolina Research Triangle area. A versatile system that satisfies all of the experimental requirements has been identified. It consists of key components from three different vendors: (1) an 18 kW rotating anode X-ray generator (Rigaku UltraX 18SFHB), (2) a four-circle goniometer (Huber 430-440-512.1) , (3) graphite and Ge monochromators and He-filled beam path, detectors, optical table, radiation shield enclosure, electronics and control and analysis software (Blake Industries), (4) a low temperature (6.5- 350K) cryostat and compressor (APD cryogenics CSW-202G,), and (5) a high temperature reaction Chamber (RT - 900 C) (Enraf-Nonius). The instrument will be used to perform in-situ and ex-situ x-ray diffraction experiments, in conjunction with electrical and magnetic property measurements to study the crystal structure, three-dimensional strain states, defects, phase transition, morphology, and their roles in materials properties. It will also be used to monitor solid-solid and solid-gas reactions in-situ to determine the conditions and mechanisms by which the reactions take place. This will facilitate synthesis and fabrication of novel solid state materials and investigation of their structures and electrical and magnetic properties. This instrument will enhance the research capabilities of five members from three departments at Duke University and the University of North Carolina (UNC), as well as significantly enhancing the educational mission of the Materials Science Programs at Duke and UNC. The variable temperature four-circle x-ray diffraction system is an ideal instrument for a laboratory component of courses in X-ray diffraction and analysis and will be used for training students at Duke and UNC in state-of-art materials characterizations. It will also provide an outreach mission to other research institutes and industries in the North Carolina Research Triangle Area. Nanostructured and thin film novel materials are of national interest because of their applicability to a wide variety of electronic, magnetic and optical devices. Structural analysis of materials on an atomic scale is very important for understanding material properties. Furthermore, it greatly facilitates the synthesis of new materials and the study of fundamental physical phenomena. The variable temperature four-circle x-ray diffraction system that will be acquired using Major Research Instrumentation program funds will enhance the research capabilities of researchers in the North Carolina Research Triangle Area, as well as provide a vehicle for training students in state-of-the-art materials characterization techniques.