Standard

Crystal structure of calcium-deficient carbonated hydroxyapatite. Thermal decomposition. / Ivanova, T. I.; Frank-Kamenetskaya, O. V.; Kol'tsov, A. B.; Ugolkov, V. L.

In: Journal of Solid State Chemistry, Vol. 160, No. 2, 01.01.2001, p. 340-349.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

Ivanova, T. I. ; Frank-Kamenetskaya, O. V. ; Kol'tsov, A. B. ; Ugolkov, V. L. / Crystal structure of calcium-deficient carbonated hydroxyapatite. Thermal decomposition. In: Journal of Solid State Chemistry. 2001 ; Vol. 160, No. 2. pp. 340-349.

BibTeX

@article{5ea642c935b44594b30c688139509058,
title = "Crystal structure of calcium-deficient carbonated hydroxyapatite. Thermal decomposition",
abstract = "Full Rietveld refinement of the crystal structure of the synthetic calcium-deficient carbonated apatite Cal3.40[Ca25.90 (NH4)0.10] [(PO4) 4.95(CO3)1.05(H 2O)0.30] [(OH) 1.65(H2O)0.45] (space group P63/m; a=9.437(1), c=6.888(1) {\AA}; Z=1; Rwp=5.23%) was carried out using X-ray powder diffraction data. The use of the model with the split position of O3 atom made it possible to find two orientations of CO3 triangles sharing one of their edges. They occupy randomly the adjacent faces of a PO4 tetrahedron that are parallel to the c axis. O3c atoms coordinating carbon atoms are shifted by 0.37 {\AA} from O3p atoms belonging to PO4 tetrahedra. The charge unbalance occurring when [CO3]2- ions replace [PO4]3- groups is primarily compensated by vacancies in Ca1 sites. The studies of the sample thermal decomposition performed by simultaneous thermal analysis and by X-ray diffraction helped to analyze the localization and the amount of lattice water that enhanced the reliability of the structural model.",
keywords = "Carbonated apatite, Crystal structure, Rietveld refinement, Thermal decomposition, X-ray powder diffraction",
author = "Ivanova, {T. I.} and Frank-Kamenetskaya, {O. V.} and Kol'tsov, {A. B.} and Ugolkov, {V. L.}",
year = "2001",
month = jan,
day = "1",
doi = "10.1006/jssc.2000.9238",
language = "English",
volume = "160",
pages = "340--349",
journal = "Journal of Solid State Chemistry",
issn = "0022-4596",
publisher = "Elsevier",
number = "2",

}

RIS

TY - JOUR

T1 - Crystal structure of calcium-deficient carbonated hydroxyapatite. Thermal decomposition

AU - Ivanova, T. I.

AU - Frank-Kamenetskaya, O. V.

AU - Kol'tsov, A. B.

AU - Ugolkov, V. L.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Full Rietveld refinement of the crystal structure of the synthetic calcium-deficient carbonated apatite Cal3.40[Ca25.90 (NH4)0.10] [(PO4) 4.95(CO3)1.05(H 2O)0.30] [(OH) 1.65(H2O)0.45] (space group P63/m; a=9.437(1), c=6.888(1) Å; Z=1; Rwp=5.23%) was carried out using X-ray powder diffraction data. The use of the model with the split position of O3 atom made it possible to find two orientations of CO3 triangles sharing one of their edges. They occupy randomly the adjacent faces of a PO4 tetrahedron that are parallel to the c axis. O3c atoms coordinating carbon atoms are shifted by 0.37 Å from O3p atoms belonging to PO4 tetrahedra. The charge unbalance occurring when [CO3]2- ions replace [PO4]3- groups is primarily compensated by vacancies in Ca1 sites. The studies of the sample thermal decomposition performed by simultaneous thermal analysis and by X-ray diffraction helped to analyze the localization and the amount of lattice water that enhanced the reliability of the structural model.

AB - Full Rietveld refinement of the crystal structure of the synthetic calcium-deficient carbonated apatite Cal3.40[Ca25.90 (NH4)0.10] [(PO4) 4.95(CO3)1.05(H 2O)0.30] [(OH) 1.65(H2O)0.45] (space group P63/m; a=9.437(1), c=6.888(1) Å; Z=1; Rwp=5.23%) was carried out using X-ray powder diffraction data. The use of the model with the split position of O3 atom made it possible to find two orientations of CO3 triangles sharing one of their edges. They occupy randomly the adjacent faces of a PO4 tetrahedron that are parallel to the c axis. O3c atoms coordinating carbon atoms are shifted by 0.37 Å from O3p atoms belonging to PO4 tetrahedra. The charge unbalance occurring when [CO3]2- ions replace [PO4]3- groups is primarily compensated by vacancies in Ca1 sites. The studies of the sample thermal decomposition performed by simultaneous thermal analysis and by X-ray diffraction helped to analyze the localization and the amount of lattice water that enhanced the reliability of the structural model.

KW - Carbonated apatite

KW - Crystal structure

KW - Rietveld refinement

KW - Thermal decomposition

KW - X-ray powder diffraction

UR - http://www.scopus.com/inward/record.url?scp=0034798065&partnerID=8YFLogxK

U2 - 10.1006/jssc.2000.9238

DO - 10.1006/jssc.2000.9238

M3 - Article

AN - SCOPUS:0034798065

VL - 160

SP - 340

EP - 349

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

IS - 2

ER -

ID: 49776648