Luminescent ceramics based on polycrystalline calcium fluoroapatite Ca₁₀(P0₄)₆F₂:Eu³⁺

• Datum: 2008
• Hauptverfasser: Babayevskaya, N.V., Mateychenko, P.V., Deineka, T.G., Kolupaeva, Z.I.
• Format: Artikel
• Sprache: English
• Veröffentlicht: НТК «Інститут монокристалів» НАН України 2008
• Schriftenreihe: Functional Materials
• Schlagworte: Technology
• Online Zugang: http://dspace.nbuv.gov.ua/handle/123456789/134566
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Luminescent ceramics based on polycrystalline calcium fluoroapatite Ca₁₀(P0₄)₆F₂:Eu³⁺ // N.V. Babayevskaya, P.V. Mateychenko, T.G. Deineka, Z.I. Kolupaeva // Functional Materials. — 2008. — Т. 15, № 2. — С. 259-264. — Бібліогр.: 23 назв. — англ.

The FAP and FAP:Eu³⁺ powders have been prepared using precipitation from aqueous solution. The as-prepared powders were compacted into tablets at 660 MPa and sintered in oxygen atmosphere at 600-1200°C. XRD analysis has shown that within the whole range of sintering temperature, the samples contain crystalline fluorapatite along with a small amount of amorphous phase, which decreases as the sintering temperature rises. The sintering temperature elevation results in extension of the coherent scattering area size (L = 42 to 54 nm). The FAP:Eu³⁺ ceramics density attains 84.67 % at Tsint = 1100°C and decreases above that value. As the temperature increases, the average grain size grows from 5 to 15 μm and the porosity decreases. The photoluminescence efficiency of Eu³⁺ in the FAP structure is maximum for ceramics sintered at 1100°C.