Authors: Rodriguez-Blanco, J.D.; Shaw, S.; Benning, L.G.

Source: Mineralogical Magazine, Volume 72, Number 1, February 2008 , pp. 283-286(4)

Publisher: Mineralogical Society

Abstract:

A reproducible and simple protocol to synthesize and stabilize the metastable CaCO₃·nH₂O phase termed amorphous calcium carbonate (ACC) was developed in order to allow the characterization of its structure at the nanoscale using high-resolution microscopy combined with Raman spectroscopy and X-ray diffraction. 'Stable' ACC consists of relatively smooth spherical particles, 50-200 nm in size, that have XRD and Raman patterns with no intense peaks or sharp bands, as expected from amorphous material. Furthermore, high-resolution imaging also supports this finding but in addition, beam-damage induced crystallization and the concomitant formation of locally ordered domains in the ACC spheres are discussed.

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Document Type: Research article

DOI: http://dx.doi.org/10.1180/minmag.2008.072.1.283

Publication date: 2008-02-01

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