Crystal structures of calcium hemicarboaluminate and carbonated calcium hemicarboaluminate from synchrotron powder diffraction data

Runčevski, T.; Dinnebier, R.E.; Magdysyuk, O.V.; Pöllmann, H.

doi:10.1107/S010876811203042X

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 3
Scattered X-ray intensities of the Hc phase as a function of diffraction angle. The observed pattern (diamonds) measured in Debye–Scherrer geometry, the best Rietveld fit profile (line) and the difference curve between the observed and calculated profiles (below) are shown. (a) The pattern collected at 297 K contains two major phases, Hc and cHc, and impurities of H₁₂Al₂Ca₃O₁₂ and CaCO₃ (reflection positions 1, 2, 3, 4 respectively). (b) At 347 K only one major phase is present, cHc and impurities of H₁₂Al₂Ca₃O₁₂ and CaCO₃ (reflection positions 1, 2, 3, respectively).

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 68| Part 5| August 2012| Pages 493-500

doi:10.1107/S010876811203042X

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