Dielectrical and structural characterization of iron oxide added to hydroxyapatite

Abstract

In this work we report preparation, structural and dielectric analyses of iron oxide added in hydroxyapatite bioceramic (Ca10(PO 4)6(OH)2 - HAP). Hydroxyapatite is the main mineral constituent of teeth and bones with excellent biocompatibility with hard and muscle tissues. The samples were prepared through a calcination procedure associated with dry high-energy ball milling process with different iron concentrations (1, 2-5 and 5 wt%). The dielectric analyses were made measuring the sample impedance in the frequency range 1 kHz-10 MHz, at room temperature. The relative permittivity of the ceramics, at 10 MHz, are between 7.13 ± 007 (1 wt%) and 6.20 ± 0.11 (5 wt%) while e″ are between 0.0795 ± 0.008 (1 wt%) and 0.067 ± 0.012 (5 wt%). These characteristics were related to the sample microstructures studied by X-ray diffraction and SEM. © Indian Academy of Sciences.