Abstract
Calcium-deficient hydroxyapatite (CDHAP) and metal-substituted hydroxyapatite (Me-HAP) are prepared by chemical deposition from solutions of relevant compositions. Powderlike samples are studied by X-ray diffraction (XRD), electron probe microanalysis (EPMA), infrared spectroscopy (IR) and scanning electron microscopy (SEM). The XRD and EPMA data show that under certain conditions calcium-deficient hydroxyapatite CDHAP could be produced with a calcium to phosphorus ratio of Ca/P = 1.43 and with an average nanocrystal size of ∼50 nm. The calcium deficiency in the hexagonal structure of Me-HAP is also retained upon the partial replacement of calcium with Zn and Cu atoms with smaller radii. The lattice parameters and the average sizes of the nanocrystals of Me-HAP are lower as compared with undoped CDHAP.
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Original Russian Text © E.P. Domashevskaya, A.A. Al-Zubadi, D.L. Goloshchapov, N.A. Rumyantseva, P.V. Seredin, 2014, published in Poverkhnost’. Rentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, 2014, No. 11, pp. 42–50.
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Domashevskaya, E.P., Al-Zubadi, A.A., Goloshchapov, D.L. et al. Structure and composition of metal-substituted calcium-deficient hydroxyapatite. J. Surf. Investig. 8, 1128–1136 (2014). https://doi.org/10.1134/S1027451014060032
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DOI: https://doi.org/10.1134/S1027451014060032