Spinels at elevated Pressure and Temperature: Linking Geo- and Material-Scientific Projects

具有尖晶石结构和通式AB2O4的矿物具有广泛的组成和物理性质，其中一些可以承受高压和高温。因此，自然科学和应用科学都在研究尖晶石结构的矿物和晶体。在自然界中，尖晶石是S地壳、上地幔和地外行星中最常见的非硅酸盐氧化物之一。由于其广泛的物理性能和耐化学性，这组晶体被广泛用作人造材料，并成为设计和优化在极端条件下使用的材料的理想范例。因此，本项目的目标是原位测定尖晶石在高压和高温条件下的物理性质和稳定性，以1.系统地了解性质-结构-化学关系和2.定量地了解观察到的性质的潜在机制和过程。为了回答这一领域中一些最紧迫的问题，将在汉堡的德国电子同步加速器(DESY)设施中同时进行使用多砧座技术和X射线技术的现场实验，以确定弹性性质。该项目将把研究尖晶石矿物和晶体的地球科学和应用科学倡议联系起来。

Minerals with spinel structure and general formula AB2O4 show a broad range of composition and physical properties and some of them sustain high pressures and temperatures. Therefore, minerals and crystals with spinel structure are investigated both, in nature and in applied sciences. In nature, spinels are among the most common non-silicate oxides in the Earth s crust and upper mantle and extraterrestrial planets. Due to their broad variety of physical properties and chemical resistance, this group of crystals is widely used as artificial material and an ideal example to design and optimize materials for use under extreme conditions. The goal of this project is therefore the in-situ determination of physical properties and stability of spinels under high pressure and temperature conditions, to 1. derive a systematic understanding of property-structure-chemistry relations and to 2. quantitatively understand the underlying mechanisms and processes of the observed properties. To answer some of the most pressing questions in this field, in-situ experiments using multi-anvil techniques in combination with X-ray techniques at the German Electron Synchrotron facility in Hamburg (DESY) will simultaneously be performed to the determination of elastic properties. This project will link earth and applied science initiatives studying spinel minerals and crystals.