Abstract
In this work we report preparation, structural and dielectric analyses
of iron oxide added in hydroxyapatite bioceramic
(Ca-10(PO4)(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 +/- 0.07 (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.
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