Preparation and Structure Refinement of Monoclinic Hydroxyapatite

Toshiyuki Ikoma; Atsushi Yamazaki; Satoshi Nakamura; Masaru Akao

doi:10.1006/jssc.1998.8120

Preparation and Structure Refinement of Monoclinic Hydroxyapatite

Toshiyuki Ikoma^*, Atsushi Yamazaki, Satoshi Nakamura, Masaru Akao

^*Corresponding author for this work

School of Creative Science and Engineering

Research output: Contribution to journal › Article › peer-review

92 Citations (Scopus)

Abstract

Monoclinic hydroxyapatite was synthesized by a wet method followed by heating in air at 1473 K for 1 h. The product is carbonate-free and has a Ca/P ratio of 1.65, which is slightly lower than the theoretical value (1.67) of hydroxyapatite. The crystal structure was investigated by Rietveld refinement using X-ray powder diffraction data. The structure has monoclinic symmetry with the space groupP2₁/b(No. 14),Z=4,Dx=3.14 g cm^-3, and the lattice constants area=9.426(3) Å,b=18.856(5) Å,c=6.887(1) Å, andγ=119.97(1)°. The hydroxyl ions have an ordered arrangement along the hydroxyl columns. The hydroxyapatite prepared in the present study is 98% monoclinic.

Original language	English
Pages (from-to)	272-276
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	144
Issue number	2
DOIs	https://doi.org/10.1006/jssc.1998.8120
Publication status	Published - 1999 May

Keywords

Hydroxyapatite
Monoclinic phase
Rietveld refinement
Wet method
X-ray powder diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1006/jssc.1998.8120

Cite this

@article{ead53542c0ad4546bd7ab03a3aeaca8b,

title = "Preparation and Structure Refinement of Monoclinic Hydroxyapatite",

abstract = "Monoclinic hydroxyapatite was synthesized by a wet method followed by heating in air at 1473 K for 1 h. The product is carbonate-free and has a Ca/P ratio of 1.65, which is slightly lower than the theoretical value (1.67) of hydroxyapatite. The crystal structure was investigated by Rietveld refinement using X-ray powder diffraction data. The structure has monoclinic symmetry with the space groupP21/b(No. 14),Z=4,Dx=3.14 g cm-3, and the lattice constants area=9.426(3) {\AA},b=18.856(5) {\AA},c=6.887(1) {\AA}, andγ=119.97(1)°. The hydroxyl ions have an ordered arrangement along the hydroxyl columns. The hydroxyapatite prepared in the present study is 98% monoclinic.",

keywords = "Hydroxyapatite, Monoclinic phase, Rietveld refinement, Wet method, X-ray powder diffraction",

author = "Toshiyuki Ikoma and Atsushi Yamazaki and Satoshi Nakamura and Masaru Akao",

year = "1999",

month = may,

doi = "10.1006/jssc.1998.8120",

language = "English",

volume = "144",

pages = "272--276",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "2",

}

TY - JOUR

T1 - Preparation and Structure Refinement of Monoclinic Hydroxyapatite

AU - Ikoma, Toshiyuki

AU - Yamazaki, Atsushi

AU - Nakamura, Satoshi

AU - Akao, Masaru

PY - 1999/5

Y1 - 1999/5

N2 - Monoclinic hydroxyapatite was synthesized by a wet method followed by heating in air at 1473 K for 1 h. The product is carbonate-free and has a Ca/P ratio of 1.65, which is slightly lower than the theoretical value (1.67) of hydroxyapatite. The crystal structure was investigated by Rietveld refinement using X-ray powder diffraction data. The structure has monoclinic symmetry with the space groupP21/b(No. 14),Z=4,Dx=3.14 g cm-3, and the lattice constants area=9.426(3) Å,b=18.856(5) Å,c=6.887(1) Å, andγ=119.97(1)°. The hydroxyl ions have an ordered arrangement along the hydroxyl columns. The hydroxyapatite prepared in the present study is 98% monoclinic.

AB - Monoclinic hydroxyapatite was synthesized by a wet method followed by heating in air at 1473 K for 1 h. The product is carbonate-free and has a Ca/P ratio of 1.65, which is slightly lower than the theoretical value (1.67) of hydroxyapatite. The crystal structure was investigated by Rietveld refinement using X-ray powder diffraction data. The structure has monoclinic symmetry with the space groupP21/b(No. 14),Z=4,Dx=3.14 g cm-3, and the lattice constants area=9.426(3) Å,b=18.856(5) Å,c=6.887(1) Å, andγ=119.97(1)°. The hydroxyl ions have an ordered arrangement along the hydroxyl columns. The hydroxyapatite prepared in the present study is 98% monoclinic.

KW - Hydroxyapatite

KW - Monoclinic phase

KW - Rietveld refinement

KW - Wet method

KW - X-ray powder diffraction

UR - http://www.scopus.com/inward/record.url?scp=0001579499&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001579499&partnerID=8YFLogxK

U2 - 10.1006/jssc.1998.8120

DO - 10.1006/jssc.1998.8120

M3 - Article

AN - SCOPUS:0001579499

SN - 0022-4596

VL - 144

SP - 272

EP - 276

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 2

ER -

Preparation and Structure Refinement of Monoclinic Hydroxyapatite

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this