Collect. Czech. Chem. Commun. 2007, 72, 321-333

Syntheses and Characterisation of Gd3Al5O12 and La3Al5O12 Garnets

Edita Garskaitea, Natalija Dubnikovaa, Arturas Katelnikovasa, Jiří Pinkasb and Aivaras Kareivaa,*

a Department of General and Inorganic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
b Department of Inorganic Chemistry, Masaryk University, Kotlářská 2, CZ-61137 Brno, Czech Republic


A sol-gel method based on in situ generation of mixed-metal chelates by complexing metal ions with ethane-1,2-diol in aqueous media has been elaborated to prepare lanthanide-ion containing garnets, Gd3Al5O12 (GAG) and La3Al5O12 (LAG). XRD patterns of the powders sintered at 1 000 °C revealed the formation of monophasic GAG. However, LAG does not form under the same experimental conditions. The phase composition of the samples was characterised by IR spectroscopy. Microstructural features of the polycrystalline garnets were studied by SEM.

Keywords: Gadolinium aluminium garnet; GAG; Lanthanum aluminium garnet; LAG; Sol-gel processes; Material science; XRD; SEM.

References: 36 live references.