High-pressure behavior of otavite (CdCO3)

R. Minch, D. H. Seoung, L. Ehm, B. Winkler, K. Knorr, L. Peters, L. A. Borkowski, J. B. Parise, Y. Lee, L. Dubrovinsky, W. Depmeier

Research output: Contribution to journalArticle

19 Citations (Scopus)


The high-pressure, room temperature behavior of otavite (CdCO3) was investigated by angle-dispersive synchrotron radiation powder diffraction up to 40 GPa, Raman spectroscopy up to 23 GPa and quantum mechanical calculations based on density functional theory. The calcite-type structure of CdCO 3 is stable up to at least ∼19 GPa as shown by Raman spectroscopy. The compression mechanism was obtained from structure refinements against the diffraction data. The quantum mechanical calculations propose a calcite-aragonite phase transition to occur at about 30 GPa. The existence of a pressure-induced phase transition is supported by the Raman and diffraction experiments. Evidence for the transformation is given by broadening of X-ray reflections and external Raman bands starting from about 19 GPa in both experiments.

Original languageEnglish
Pages (from-to)251-257
Number of pages7
JournalJournal of Alloys and Compounds
Issue number2
Publication statusPublished - 2010 Oct 22

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High-pressure behavior of otavite (CdCO<sub>3</sub>)'. Together they form a unique fingerprint.

  • Cite this

    Minch, R., Seoung, D. H., Ehm, L., Winkler, B., Knorr, K., Peters, L., Borkowski, L. A., Parise, J. B., Lee, Y., Dubrovinsky, L., & Depmeier, W. (2010). High-pressure behavior of otavite (CdCO3). Journal of Alloys and Compounds, 508(2), 251-257. https://doi.org/10.1016/j.jallcom.2010.08.090