Dielectric Properties of Calcium Phosphate Ceramics

Omer KAYGILI, Serhat KESER, Tankut ATES, Sevda KIRBAG, Fahrettin YAKUPHANOGLU

Abstract


Calcium phosphate ceramics with various Ca/P ratios of 1, 2, 3, 4 and 8 were synthesized via sol-gel route. The effects of Ca/P molar ratio on structural, morphological, dielectric and antimicrobial properties were investigated in detail using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy and dielectric measurements. The Ca/P molar ratio significantly affects the crystal structure and phase composition. The crystallite size, lattice parameters and volume of the unit cell were remarkably affected by the change in the Ca/P molar ratio. The microstructure is changed with increasing the Ca/P molar ratio. The relative permittivity and alternating current conductivity gradually decrease for the samples having the Ca/P ratios higher than 2. The dielectric loss decreases gradually with the increase of the molar ratio of Ca/P.

DOI: http://dx.doi.org/10.5755/j01.ms.22.1.7222


Keywords


calcium phosphates, crystal structure, dielectric properties

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Print ISSN: 1392–1320
Online ISSN: 2029–7289