Selected Polymorphs of CaCO3 Through Epitaxy with Inorganic Substrates Aligned with an Electric Field


  • We thank Dr. J. Aizenberg, Prof. A. J. Matzger, and Mr. K. Kim for useful discussions, and Mr. D. Jang for his help with the XRD experiment.


The epitaxial requirement for the selection of metastable arogonite among the polymorphs of calcium carbonate has been studied. Under calcite-favorable conditions, the critical epitaxial strain with aragonite-type inorganic substrates was found to be in the range 5–7 %. The Figure shows aragonite “fuzz” grown on SrCO3 crystals that were aligned and fractured perpendicular to the alignment axis.