Growth and Properties of Ytterbium Doped KY(WO4)2 Nanocomposites
Nanocomposites (nanocrystals) of KY(WO4)2 and KY(WO4)2+1% mol Yb were synthesized using a Complex Sol-Gel Process (CSGP). A chemical treatment with concentrated nitric acid and hydrogen peroxide was used to reduce the decarbonisation temperature. The expected monoclinic phase C2/c of the KYW of the nanocomposite powder was confirmed using XDR. From the X-ray diffraction measurements, the unit cell parameters and the size of nanoparticles was determined. Electron spin resonance studies in the X band were carried out on KYW and KYW:Yb nanocrystals. The sintered samples were made with using the high pressure technique at temperatures up to 600oC. In addition chemical analysis, X-ray diffraction measurements and ESR investigations were carried out on the sintered samples.
Witold Łojkowski and John R. Blizzard, Urszula Narkiewicz and Janusz D. Fidelus
M.T. Borowiec et al., "Growth and Properties of Ytterbium Doped KY(WO4)2 Nanocomposites", Solid State Phenomena, Vol. 128, pp. 25-30, 2007