Growth and properties of ytterbium doped KY(WO4)2 nanocomposites

Mieczyslaw T. Borowiec 1Andrzej Deptuła 2Witold Łojkowski 3Stanisław Gierlotka 3Vladimir P. Dyakonov 1Wieslawa Lada 2Tadeusz Olczak 2Danuta Wawszczak 2Pavlo Aleshkevych 1Wiktor Domuchowski 1Tetyana Zayarnyuk 1Marek Baranski 1Henryk Szymczak 1

1. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland
2. Institute of Nuclear Chemistry and Technology (IChTJ), Dorodna 16, Warszawa 03-195, Poland
3. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland

Abstract

Nanocomposites (nanocrystals) of KY(WO) and KY(WO)+1% mol Yb have been synthesized using a Complex Sol-Gel Process (CSGP). The chemical treatment with concentrated nitric acid and hydrogen peroxide was used to decrease the decarbonisation temperature.

The expected monoclinic phase C2/c of the KYW of the nanocomposite powder has been confirmed using XDR technique. From the X-ray diffraction measurements, the unit cell parameters and the size of a nanoparticles have been determined. Electron spin resonance studies in the X band have been performed on KYW and KYW:Yb nanocrystals.

The sintered samples were made with using the high pressure technique in the temperature up to 600oC. The chemical analysis, the X-ray diffraction measurements and ESR investigations were made for sintered samples too.

 

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Presentation: Poster at E-MRS Fall Meeting 2006, Symposium C, by Mieczyslaw T. Borowiec
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-05-15 14:42
Revised:   2009-06-07 00:44