Collaborative Research: Structure-Property Relationships of Novel Rare Earth-Ultraphosphate Glasses

合作研究：新型稀土-超磷酸盐玻璃的结构-性能关系

• 批准号: 0305202
• 负责人: Richard Brow
• 金额: $ 26.4万
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-01 至 2011-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0305202&HistoricalAwards=false
• 关键词: Collaborative; Research; Structure; Property; Relationships

This project is a multi-disciplinary collaboration between materials researchers at the University of Missouri-Rolla (UMR) and physicists at the University of North Dakota (UND) to process and characterize novel rare earth (RE) containing ultraphosphate glasses that possess interesting optical and magnetic properties. The properties of these glasses have an unusual dependence on composition that involves the coordination environment of the RE3+ ions that modify the phosphate glass network. The research team affiliated with the Ceramic Engineering Department and Graduate Center for Materials Research at UMR will prepare optically active glasses (including Nd- and Er-phosphate compositions) and glasses with potentially large magnetic susceptibilities (e.g., Dy-phosphate compositions) using techniques to minimize contamination by water and transition metals. Optical characteristics will be determined at UMR by several techniques, including absorption and emission spectroscopies and fluorescence lifetime measurements, and magnetic properties will be characterized by the research team affiliated with the Physics Department at the UND. Detailed information about the coordination environments of the RE ions will be collected using x-ray absorption spectroscopy and x-ray and neutron diffraction techniques. These experiments will be performed by members of the UND team in collaboration with students and researchers from UMR. The goal of these structural studies is to provide a detailed explanation for the compositional-dependence of the macroscopic properties of these glasses, and then to use this information to design other technologically significant glass compositions.This multi-disciplinary project will provide a detailed understanding of how the molecular-level structure of rare earth-containing glasses affect macroscopic optical and magnetic properties. This information will guide scientists and engineers who use such glasses for new sensors, amplifiers and other devices that have both civilian and defense applications. The collaboration among students and researchers at both institutions will promote the concept that progress in materials research can be best accomplished by diverse, multi-disciplinary teams.

该项目是密苏里大学罗拉分校 (UMR) 材料研究人员和北达科他大学 (UND) 物理学家之间的多学科合作，旨在处理和表征含有超磷酸盐玻璃的新型稀土 (RE)，这些玻璃具有有趣的光学和磁性。 这些玻璃的特性对成分具有不同寻常的依赖性，其中涉及改变磷酸盐玻璃网络的 RE3+ 离子的配位环境。 隶属于UMR陶瓷工程系和材料研究研究生中心的研究小组将使用尽量减少水和过渡金属污染的技术来制备光学活性玻璃（包括磷酸钕和磷酸铒成分）和具有潜在大磁化率的玻璃（例如磷酸镝成分）。 UMR 将通过多种技术确定光学特性，包括吸收和发射光谱以及荧光寿命测量，磁特性将由 UND 物理系附属研究团队进行表征。 有关稀土离子配位环境的详细信息将使用 X 射线吸收光谱以及 X 射线和中子衍射技术来收集。 这些实验将由 UND 团队的成员与 UMR 的学生和研究人员合作进行。这些结构研究的目标是为这些玻璃的宏观性能的成分依赖性提供详细的解释，然后利用这些信息来设计其他具有技术意义的玻璃成分。这个多学科项目将提供对含稀土玻璃的分子级结构如何影响宏观光学和磁性的详细了解。这些信息将指导科学家和工程师将这种眼镜用于新型传感器、放大器和其他民用和国防应用的设备。 两个机构的学生和研究人员之间的合作将促进这样一种理念：材料研究的进展可以最好地由多元化、多学科团队来完成。