ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 67, (2) 182 - 188 (2023)

Zhang Hongquan, Zhang Qi, Wen Jin, Yang Jingli
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China

Keywords: Strontium doping, Hydroxyapatite, Ferroelectric properties, Remnant polarization intensity

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.

PDF (1.5 MB)

doi: 10.13168/cs.2023.0016
Licence Creative Commons © 2015 - 2024
Institute of Rock Structure and Mechanics of the CAS & University of Chemistry and Technology, Prague
Webmaster | Journal Contact