| || Sol-gel Synthesis and Characterisation of Nanocrystalline Yttrium Aluminum Garnet Nanopowder
Author : Kiranmala Devi;Choudhary, Rekha;Satsangi, A.K.;Gupta, Ravi Kumar
Source : Defence Science Journal ; Vol:58(4) ; 2008 ; pp 545-549
Subject : 620.1 Material Science and Technology;66 Chemical Technology
Keywords : Yttrium aluminum garnet;Sol-gel synthesis;YAG nanopowder;Synthesis;Crystal characterisation
Abstract : The synthesis of yttrium aluminum garnet (YAG) (Y3 Al5O12) nanopowder was carried out by sol-gel method. Y(NO3)3.6H2O, Al(NO3)3.9H2O in the presence of citric acid as complexing agent were used as starting materials. YAG nanopowder was characterised by FTIR, TGA, and XRD. To get phase-pure nanocrystalline YAG powder at relatively lower temperature, calcination at various temperatures was studied and calcination temperature was optimised. Particle size, estimated by XRD using Scherrer's equation, was found to be 2835 nm which was further confirmed by transmission electron microscopy. The particle morphology was studied by SEM.