MRI-R2: Acquisition of an X-Ray Diffractometer for Powder and Thin Film Materials Characterization

技术摘要：该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。x射线衍射（XRD）是一种用于分析粉末和薄膜晶体材料的强大技术。该项目将支持购买一个灵活的、多用途的x射线衍射仪，以扩展和支持卡尔顿学院目前在化学、地质和物理方面的研究方向。该仪器的多学科研究应用分为三个方面：1)晶体延伸线性链材料暴露于有机蒸气前后的XRD光谱分析，以测试其作为气相色传感器的适用性；2)确定高阶氧化物的存在和富eu EuO薄膜的结晶度，以更好地了解金属-绝缘体转变和巨大磁阻响应特性；3)表征粘土矿物学，以支持阿拉斯加东南部构造和古气候历史的研究。除了其研究作用外，XRD仪器还将为化学、地质和物理等传统课程以及全年本科研究项目的多样化学生群体提供创新教学机会。非技术摘要：该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。x射线的波长与许多材料中原子之间的距离相当。由于这个原因，x射线可以提供一种强大的探针，用于探索波长大得多的可见光无法达到的物质水平。该项目将支持购买多用途x射线衍射仪（XRD），以表征各种各样的材料，包括可能对各种化学和磁性传感器有用的材料，以及可以帮助我们了解阿拉斯加东南部气候历史的粘土。除了促进多学科研究以促进我们对材料组成和结构的理解外，XRD系统将在培养下一代科学家方面发挥重要作用，因为它将被整合到课程中，并为卡尔顿学院化学，地质学和物理学的本科生提供研究经验。

0960087Eblen-ZayasCarleton CollegeTechnical Summary: This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).X-ray diffraction (XRD) is a powerful technique for analyzing crystalline materials as both powders and thin films. This project will support the purchase of a flexible, multi-purpose x-ray diffractometer to expand and support current research directions in chemistry, geology, and physics at Carleton College. The multidisciplinary research applications for this instrument fall into three areas: 1) XRD spectral analysis before and after exposure of crystalline extended linear chain materials to organic vapors to test their suitability as vapochromic sensors, 2) determination of the presence of higher order oxides and film crystallinity of Eu-rich EuO thin films to better understand metal-insulator transition and colossal magnetoresistance response characteristics, 3) characterization of clay mineralogy to support a study of the tectonic and paleoclimate history of southeast Alaska. In addition to its research role, the XRD instrument will also support innovative teaching opportunities for a diverse student body both within the traditional curricula of chemistry, geology, and physics and through year round undergraduate research projects. Non-technical abstract:This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).X-rays have a wavelength that is comparable to the spaces between atoms in many materials. For this reason, x-rays can provide a powerful probe for exploring materials at a level that cannot be achieved with visible light, which has a much larger wavelength. This project will support the purchase of a multipurpose x-ray diffractometer (XRD) to characterize a wide variety of materials, including materials that might be useful for various kinds of chemical and magnetic sensors and clays that can help us understand the climate history of southeast Alaska. In addition to enabling multidisciplinary research to promote our understanding of materials composition and structure, the XRD system will play an important role in training the next generation of scientists as it will be integrated into the curriculum as well as providing research experiences for undergraduate students in chemistry, geology, and physics at Carleton College.