Date of Award
2000
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Thesis/Dissertation Advisor [Chair]
Leventouri, Theodora
Abstract
The mechanism of the carbonate substitution in the apatite structure is unraveled through analysis of Rietveld refinements of powder diffraction data from a single-phase natural carbonate fluorapatite (francolite). The refined values of the P-O bond lengths give a ~1.6% distortion of the phosphate tetrahedron caused by the carbonate substitution. The two bond lengths P-O1 and P-O2 and their corresponding angles on the mirror plane of the phosphate tetrahedron are mainly disturbed by this substitution. A static positional disorder, mainly of the atoms at the tetrahedral sites, is revealed from the temperature dependence of the atomic anisotropic displacement parameters. A model for the mechanism of the carbonate entrance in the apatite structure is proposed.
Extent
77 p.
Recommended Citation
Moghaddam, Hadi Yazdani, "Rietveld analysis of powder diffraction data from a carbonate fluorapatite" (2000). Electronic Theses and Dissertations 2000 - 2009. 120.
https://digitalcommons.fau.edu/etd_general_5/120
Identifier
FADT12718
Comments
Thesis (M.S.)--Florida Atlantic University, 2000.|Thesis (M.S.)--Florida Atlantic University, 2000.