At present materials science the ceramics based on apatite-like compound doped with REE have been extensively studied for use as phosphors and laser materials. Monophasic polycrystalline FAP and FAP:Eu³⁺ were obtained using the precipitation from aqueous solution method. As-obtained samples were compacted in tablets at 660 MPa and were sintered in oxygen atmosphere 600 – 1200 ^oC. XRD analysis showed that no additional phase are observed. The increase of sintering temperature leads to growth of nanocrystalline blocks size (L) – from 42 nm to 54 nm. It was observed that ceramic density arise up to 1100 ^oC – ρ_rel= 84.67 % and decrease at 1200 ^oC – ρ_rel=19.1 %. The ceramics porosity reaches maximum value at ρ_rel= 74.06 %. The optimal sintering temperature (t=1100 ^oC), at which the intensive luminescence of Eu³⁺ in FAP structure is observed, was found.

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