Raman scattering and Cr3+ luminescence study on the structural behavior of δ-AlOOH at high pressures

Abstract

δ-AlOOH is regarded as a potential water carrier that is stable in the Earth's lower mantle down to the core-mantle boundary along the cold slab geotherm; thus, knowledge of its structural evolution under high pressure is very important for understanding water circulation in the Earth's interior. In this work, we conducted Raman scattering and luminescence spectroscopic experiments on δ-AlOOH at highThis is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.