Substitution of calcium with neodymium and dysprosium in hydroxyapatite structure
Using X-ray phase analysis, the calcium substitution with Nd and Dy in hydroxyapatite Са₁₀₋xLnx(РО₄)₆(ОН)₂-хОх at 1100°C has been established to take place up to x = 2.0 and 1.4, respectively. The IR spectroscopy has shown that along with the Ca²⁺ +ОH⁻ → Ln⁺³ + O²⁻ substitution, the 2ОH⁻ O²⁻ + □ on...
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| Datum: | 2005 |
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| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
НТК «Інститут монокристалів» НАН України
2005
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| Schriftenreihe: | Functional Materials |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/139742 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Substitution of calcium with neodymium and dysprosium in hydroxyapatite structure / E.I. Get‘man, S.N. Loboda, T.V. Tkachenko, A.V. Ignatov, T.F. Zabirko // Functional Materials. — 2005. — Т. 12, № 1. — С. 6-10. — Бібліогр.: 19 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | Using X-ray phase analysis, the calcium substitution with Nd and Dy in hydroxyapatite Са₁₀₋xLnx(РО₄)₆(ОН)₂-хОх at 1100°C has been established to take place up to x = 2.0 and 1.4, respectively. The IR spectroscopy has shown that along with the Ca²⁺ +ОH⁻ →
Ln⁺³ + O²⁻ substitution, the 2ОH⁻ O²⁻ + □ one occurs. The structure refinement using Rietveld method has shown that Nd and Dy ions occupy mainly the Ca(2) positions. The Ca²⁺ + ОH⁻ → Ln3⁺ + O²⁻ substitution has been established to strengthening of the Ca(2)-O(4) bond but weakens somewhat the Ca(2)-O(1,2,3) ones. |
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