Post-perovskite MgSiO3 investigated by first principles

Taku Tsuchiya, Jun Tsuchiya, Renata M. Wentzcovitch

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A high-pressure phase transition in iron free MgSiO3 perovskite, the most abundant Earth forming mineral phase, was discovered and reported in 2003-2004. Here, we summarize our theoretical and computational studies on this phase transition and on the physical properties of the newly found post-perovskite phase. The theoretical approach is based on density functional theory and on the plane-wave pseudopotential method. We focus here on the structural, elastic, vibrational, and thermodynamic properties of the post-perovskite phase. The predicted Clapeyron slope of this transition and several elastic properties of the highpressure phase strongly suggest that this new phase is an important candidate for a primary constituent in D″.

Original languageEnglish (US)
Title of host publicationSuperplumes
Subtitle of host publicationBeyond Plate Tectonics
PublisherSpringer Netherlands
Pages83-103
Number of pages21
ISBN (Print)9781402057496
DOIs
StatePublished - Dec 1 2007

Fingerprint Dive into the research topics of 'Post-perovskite MgSiO<sub>3</sub> investigated by first principles'. Together they form a unique fingerprint.

Cite this