Preparation and Structure Refinement of Monoclinic Hydroxyapatite

Toshiyuki Ikoma, Atsushi Yamazaki, Satoshi Nakamura, Masaru Akao

    Research output: Contribution to journalArticle

    78 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 languageEnglish
    Pages (from-to)272-276
    Number of pages5
    JournalJournal of Solid State Chemistry
    Volume144
    Issue number2
    DOIs
    Publication statusPublished - 1999 May

    Fingerprint

    Durapatite
    Hydroxyapatite
    carbonates
    preparation
    crystal structure
    heating
    air
    symmetry
    products
    diffraction
    ions
    Rietveld refinement
    x rays
    Carbonates
    Hydroxyl Radical
    X ray powder diffraction
    Lattice constants
    Crystal structure
    Heating
    Ions

    Keywords

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

    ASJC Scopus subject areas

    • Inorganic Chemistry
    • Physical and Theoretical Chemistry
    • Materials Chemistry

    Cite this

    Preparation and Structure Refinement of Monoclinic Hydroxyapatite. / Ikoma, Toshiyuki; Yamazaki, Atsushi; Nakamura, Satoshi; Akao, Masaru.

    In: Journal of Solid State Chemistry, Vol. 144, No. 2, 05.1999, p. 272-276.

    Research output: Contribution to journalArticle

    Ikoma, Toshiyuki ; Yamazaki, Atsushi ; Nakamura, Satoshi ; Akao, Masaru. / Preparation and Structure Refinement of Monoclinic Hydroxyapatite. In: Journal of Solid State Chemistry. 1999 ; Vol. 144, No. 2. pp. 272-276.
    @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 = "5",
    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

    VL - 144

    SP - 272

    EP - 276

    JO - Journal of Solid State Chemistry

    JF - Journal of Solid State Chemistry

    SN - 0022-4596

    IS - 2

    ER -