Ontology highlight
ABSTRACT:
SUBMITTER: Bykova E
PROVIDER: S-EPMC6237875 | biostudies-other | 2018 Nov
REPOSITORIES: biostudies-other
Nature communications 20181115 1
Modelling of processes involving deep Earth liquids requires information on their structures and compression mechanisms. However, knowledge of the local structures of silicates and silica (SiO<sub>2</sub>) melts at deep mantle conditions and of their densification mechanisms is still limited. Here we report the synthesis and characterization of metastable high-pressure silica phases, coesite-IV and coesite-V, using in situ single-crystal X-ray diffraction and ab initio simulations. Their crystal ...[more]