Preparation and dielectric property of sintered monoclinic hydroxyapatite

Toshiyuki Ikoma; Atsushi Yamazaki; Satoshi Nakamura; Masaru Akao

doi:10.1023/A:1006610521173

Preparation and dielectric property of sintered monoclinic hydroxyapatite

Toshiyuki Ikoma, Atsushi Yamazaki, Satoshi Nakamura, Masaru Akao

School of Creative Science and Engineering

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

46 Citations (Scopus)

Abstract

A preparation method of sintered monoclinic hydroxyapatite, Ca₁₀(PO₄)₆(OH)₂ is presented and its dielectric properties at various temperatures and/or frequencies are discussed. Sintered monoclinic hydroxyapatite showed two dielectric-loss peaks which can be attributed to reorientation of hydroxyl ions and defects of hydroxyl ions due to formation of oxyapatite. A dielectric anomaly at 483 K was observed, being consistent with the phase transition that change the hydroxyl dipole moments; the hydroxyl dipole moment is ordered at temperature lower than 483 K and that is disordered at temperatures higher than 483 K.

Original language	English
Pages (from-to)	1225-1228
Number of pages	4
Journal	Journal of Materials Science Letters
Volume	18
Issue number	15
DOIs	https://doi.org/10.1023/A:1006610521173
Publication status	Published - 1999 Jan 1

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1023/A:1006610521173

Cite this

@article{6da22570deba4c5ca750d2bd89975c92,

title = "Preparation and dielectric property of sintered monoclinic hydroxyapatite",

abstract = "A preparation method of sintered monoclinic hydroxyapatite, Ca10(PO4)6(OH)2 is presented and its dielectric properties at various temperatures and/or frequencies are discussed. Sintered monoclinic hydroxyapatite showed two dielectric-loss peaks which can be attributed to reorientation of hydroxyl ions and defects of hydroxyl ions due to formation of oxyapatite. A dielectric anomaly at 483 K was observed, being consistent with the phase transition that change the hydroxyl dipole moments; the hydroxyl dipole moment is ordered at temperature lower than 483 K and that is disordered at temperatures higher than 483 K.",

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

year = "1999",

month = jan,

day = "1",

doi = "10.1023/A:1006610521173",

language = "English",

volume = "18",

pages = "1225--1228",

journal = "Journal of Materials Science Letters",

issn = "0261-8028",

publisher = "Chapman & Hall",

number = "15",

}

TY - JOUR

T1 - Preparation and dielectric property of sintered monoclinic hydroxyapatite

AU - Ikoma, Toshiyuki

AU - Yamazaki, Atsushi

AU - Nakamura, Satoshi

AU - Akao, Masaru

PY - 1999/1/1

Y1 - 1999/1/1

N2 - A preparation method of sintered monoclinic hydroxyapatite, Ca10(PO4)6(OH)2 is presented and its dielectric properties at various temperatures and/or frequencies are discussed. Sintered monoclinic hydroxyapatite showed two dielectric-loss peaks which can be attributed to reorientation of hydroxyl ions and defects of hydroxyl ions due to formation of oxyapatite. A dielectric anomaly at 483 K was observed, being consistent with the phase transition that change the hydroxyl dipole moments; the hydroxyl dipole moment is ordered at temperature lower than 483 K and that is disordered at temperatures higher than 483 K.

AB - A preparation method of sintered monoclinic hydroxyapatite, Ca10(PO4)6(OH)2 is presented and its dielectric properties at various temperatures and/or frequencies are discussed. Sintered monoclinic hydroxyapatite showed two dielectric-loss peaks which can be attributed to reorientation of hydroxyl ions and defects of hydroxyl ions due to formation of oxyapatite. A dielectric anomaly at 483 K was observed, being consistent with the phase transition that change the hydroxyl dipole moments; the hydroxyl dipole moment is ordered at temperature lower than 483 K and that is disordered at temperatures higher than 483 K.

UR - http://www.scopus.com/inward/record.url?scp=0032673735&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032673735&partnerID=8YFLogxK

U2 - 10.1023/A:1006610521173

DO - 10.1023/A:1006610521173

M3 - Article

AN - SCOPUS:0032673735

SN - 0261-8028

VL - 18

SP - 1225

EP - 1228

JO - Journal of Materials Science Letters

JF - Journal of Materials Science Letters

IS - 15

ER -

Preparation and dielectric property of sintered monoclinic hydroxyapatite

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this