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PREPARATION AND FERROELECTRIC PROPERTIES OF STRONTIUM-DOPED HYDROXYAPATITE CERAMICS
- Source :
- Ceramics-Silikáty, Vol 67, Iss 2, Pp 182-188 (2023)
- Publication Year :
- 2023
- Publisher :
- University of Chemistry and Technology, Prague, 2023.
-
Abstract
- Strontium-doped hydroxyapatite ceramics with good ferroelectric properties were prepared using 5% bioactive phosphate glass as an additive at 700 °C in this paper. XRD, FTIR, SEM analyses and a ferroelectric tester were used to analyse the crystal structure, phase composition, microstructure and ferroelectric properties of the prepared ceramics. The results revealed that substitution of Ca2+ by Sr2+ in the HA lattice would lead to an increase in its lattice parameters and a decrease in crystallinity. Moreover, the lattice distortion and the increase in the electric dipole moment caused by the Sr2+ doping enhanced the ferroelectric properties of the Sr-HA ceramics. Increasing the density of the samples could enhance their ferroelectric properties. The remnant polarisation intensity increased from 0.0156 μC/cm² to 0.0728 μC/cm², the maximum polarisation intensity increased from 0.1210 μC/cm² to 0.1628 μC/cm².
Details
- Language :
- English
- ISSN :
- 08625468 and 18045847
- Volume :
- 67
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Ceramics-Silikáty
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.b63c6676c664ad2bada37d63ec1ae9d
- Document Type :
- article
- Full Text :
- https://doi.org/10.13168/cs.2023.0016