[PDF]    http://dx.doi.org/10.3952/lithjphys.47112

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 47, 75–80 (2007)


SOL–GEL SYNTHESIS OF NANOSIZED LANTHANIDE-DOPED MIXED-METAL GARNETS
S. Šakirzanovas and A. Kareiva
Faculty of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
E-mail: aivaras.kareiva@chf.vu.lt

Received 14 December 2006

Lanthanide-doped mixed-metal garnets RE:Y3Sc2AlGa2O12 (RE = Nd, Ho, Er, Tb, Dy, Yb) have been synthesized using an aqueus sol–gel synthesis route. Results obtained by different characterization techniques (FTIR, XRD, ICP, SEM, TEM) revealed no influence of a doping element on the morphology and phase purity of the synthesized samples. However, electron diffraction images showed streakings which indicated that different point or planar defects occured in the structure of synthesized garnets.
Keywords: sol–gel, mixed-metal garnet, rare-earth metals
PACS: 42.70.-a, 61.46.-w, 68.37.Hk, 68.37.Lp


MIŠRIŲ METALŲ GRANATŲ SU LANTANOIDŲ PRIEMAIŠOMIS NANODALELIŲ SINTEZĖ ZOLIŲ IR GELIŲ METODU
S. Šakirzanovas, A. Kareiva
Vilniaus universiteto Chemijos fakultetas, Vilnius, Lietuva

Vandeniniu zolių ir gelių metodu buvo susintetinti įvairūs mišrūs metalų granatai (RE:Y3Sc2AlGa2O12, RE = Nd, Ho, Er, Tb, Dy, Yb). FTIR ir XRD tyrimais įrodyta, kad 1000 °C temperatūroje susidaro vienfazis mišrus metalų granatas. Nuodugnesni tyrimai (SEM, TEM, ICP) parodė, kad priemaišinio elemento prigimtis neturi įtakos gautų granatų morfologijai ir faziniam grynumui, nors elektronų difrakcijos nuotraukos rodo įvairius kristalinės gardelės defektus.


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