Abstract
Gadolinium aluminate (GdAlO3) perovskite nanopowders were synthesized using microreactors made of poly(oxyethylene) nonylphenyl ether/water/cyclohexane microemulsions. Differential thermal analysis confirmed the formation of GdAlO3 at 902°C. X-ray diffraction analysis (XRD) of all the powders indicated the formation of single-phase perovskite structure on calcination. The average crystallite size was found to increase with increase in water-to-surfactant molar ratio and the average particle size increases from 23 to 28 nm on increasing the molar ratio from 4 to 8. The Fourier transform infrared (FTIR) spectra show that the lower frequency bands are assigned to M–O vibrations, which are characteristic vibrations of perovskite structure compounds.
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