Synthesis of Lower Valent Rare Earth Metal Phosphates

低价稀土金属磷酸盐的合成

• 批准号: 9012983
• 负责人: Shiou-Jyh Hwu
• 金额: $ 5万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9012983&HistoricalAwards=false
• 关键词: Synthesis; Lower; Valent; Rare; Earth

The author of this SGER Proposal aims to synthesize and characterize a new class of laser materials for the visible and near infrared spectral region. The solid-state synthesis of compounds consisting of reduced rare earth metal phosphates will be pursued, with the emphasis of this effort on the lower valent rare earth metal cations such as scandium and yttrium in an oxo- type phosphate anion framework. Growing single crystals and characterizing new phases by techniques such as powder or single crystal x-ray diffraction, infrared spectroscopy, differential thermal analysis, magnetic susceptability, photoelectron spectroscopy and high resolution electron microscopy will be done with equipment presently aailable for this project at Rice University. The exploratory synthesis of new classes of compounds with unusual oxidation states and coordination is a rapidly emerging area that is providing new materials or important "hot technology" areas such as magnetism and new laser materials exhibiting sharp fluorescent lines, strong absorption bands, and high quantum efficiencies.

本SGER提案的作者旨在综合和 表征一类新型可见光激光材料， 近红外光谱区 的固相合成 由还原的稀土金属磷酸盐组成的化合物将 这一努力的重点放在较低的价 稀土金属阳离子如钪和钇， 型磷酸根阴离子骨架。 单晶生长和 通过粉末或单一技术表征新相 晶体x射线衍射，红外光谱，微分 热分析，磁性，光电子 光谱和高分辨率电子显微镜将完成 与设备目前可用于该项目在赖斯 大学 探索性地合成了新的 具有不寻常的氧化态和配位的化合物是一种 快速崛起的领域，提供新材料或 重要的“热点技术”领域，如磁学和新激光 材料表现出尖锐的荧光线，强吸收 带和高量子效率。