Crystal structure of high purity type A carbonate apatite

Tonegawa, Toru*; Ikoma, Toshiyuki*; Suetsugu, Yasushi*; Igawa, Naoki ; Matsushita, Yoshitaka*; Yoshioka, Tomohiko*; Hanagata, Nobutaka*; Tanaka, Junzo*

Hydroxyapatite is the main inorganic component of bone and tooth minerals, in which CO $_{3}$ ions partially substitute for OH and/or PO $_{4}$ ions. In this study, high purity type A carbonate apatite, Ca $_{9.89}$ (PO $_{4}$ ) $_{5.99}$ (CO $_{3}$ ) $_{0.90}$ powder completely substituted by carbonate ions were synthesized by a treatment of low crystalline hydroxyapatite powder, Ca $_{9.89}$ (PO $_{4}$ ) $_{5.99}$ (OH) $_{1.80}$ ) in a dry CO $_{2}$ flow at 1000 $^{circ}$ C. The crystal structure of the sample was the monoclinic symmetry with space group of and the lattice parameters, = 0.9566 (1), = 1.9063 (2), = 0.6867 (1) nm and =119.84 (1) $^{circ}$ , which was refined by a Rietveld method with neutron diffraction data.

Language	:	English
Journal	:	Proceedings of 22nd International Symposium on Ceramics in Medicine (BIOCERAMICS-22)
Volume	:
Number	:
Pages	:	p.93 - 96
Publication Year/Month	:	2009/12
Meeting title	:	22nd International Symposium on Ceramics in Medicine (BIOCERAMICS-22)
Held date	:	2009/10
Location (city)	:	Daegu
Location (country)	:	Korea
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DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	no keyword
Research Facility	:	JRR-3M(研究炉3)
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Article of JAEA R&D Review	:
Cooperating Institute	:	物質・材料研究機構

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Registration No. : BB20103415
JAEA Abstracts No. :
Paper Submission No. : 8892

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