Pressure-induced polyamorphism and formation of 'aragonitic' amorphous calcium carbonate

Alejandro Fernandez-Martinez*, Bora Kalkan, Simon M. Clark, Glenn A. Waychunas

*Corresponding author for this work

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Pressed for time: Amorphous calcium carbonate (ACC) undergoes a reversible amorphous-amorphous phase transition at 10 GPa, adopting an aragonite-like local order. This result suggests a mechanism by which Mg2+ - a cation with smaller ionic radius than Ca2+ - modifies the local order of ACC to an aragonite-like order by helping to decrease the molar volume of the amorphous phase.

Original languageEnglish
Pages (from-to)8354-8357
Number of pages4
JournalAngewandte Chemie - International Edition
Volume52
Issue number32
DOIs
Publication statusPublished - 5 Aug 2013

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