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

0960087 Eblen-ZayasCarleton College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台灵活的多用途X射线衍射仪，以扩展和支持卡尔顿学院目前在化学，地质学和物理学方面的研究方向。该工具的多学科研究应用分为三个领域：1）在结晶延伸线性链材料暴露于有机蒸气之前和之后的XRD光谱分析，以测试它们作为蒸气变色传感器的适用性，2）测定富Eu EuO薄膜的高级氧化物和膜结晶度的存在，以更好地理解金属-绝缘体转变和巨磁阻响应特性，3）粘土矿物学特征，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，XRD仪器还将支持创新的教学机会，无论是在化学，地质学和物理学的传统课程，并通过全年的本科研究项目，为多样化的学生团体。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空间相当。出于这个原因，x射线可以提供一个强大的探针，用于探测物质，其水平是可见光无法达到的，可见光具有更大的波长。该项目将支持购买多用途X射线衍射仪（XRD），以表征各种材料，包括可能用于各种化学和磁性传感器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。除了使多学科研究，以促进我们对材料组成和结构的理解，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，并为卡尔顿学院的化学，地质学和物理学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.