Recovery of Unquenchable High Pressure Phases by a Cryogenic Technique

通过低温技术回收不可淬灭的高压相

• 批准号: 9628678
• 负责人: Kurt Leinenweber
• 金额: $ 4.21万
• 依托单位: Arizona State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-15 至 1999-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628678&HistoricalAwards=false
• 关键词: Recovery; Unquenchable; Pressure; Phases; Cryogenic

9628678 Leinenweber The proposed research focuses on the recovery of several unquenchable phases which are of long-standing interest in mineral physics. A primary target will be unquenchable CaSiO3 perovskite. Low temperature x-ray and spectroscopic studies will be performed on this phase to determine details of its structure and dynamics. Another target synthesis will be of the high pressure monoclinic for of SiO2 cristobalite, for structure solution and refinement of x-ray and neutron diffraction. Low temperature Raman and x-ray studies of the baddeleyite phase Ca(OH)2 will be performed. Also targeted are unquenchable FeTiO3 perovskite and related compounds such as MnTiO3 perovskite, and high pressure AlPO4. The studies proposed here are non-destructive, so the sample will also be available for further work.

9628678 Leinenweber拟议的研究重点是几个不可淬灭的阶段，这是矿物物理学的长期利益的恢复。主要目标将是不可淬灭的CaSiO3钙钛矿。将对这一阶段进行低温X射线和光谱研究，以确定其结构和动力学的细节。另一个目标合成将是SiO2方石英的高压单斜晶系，用于结构解决方案和X射线和中子衍射的改进。低温拉曼和X射线研究的斜锆石相Ca（OH）2将进行。 目标还包括不可淬灭的FeTiO 3钙钛矿和相关化合物，如MnTiO 3钙钛矿和高压AlPO 4。这里提出的研究是非破坏性的，因此样品也将可用于进一步的工作。