Chemical preparation of pure and strontium- and/or magnesium-doped lanthanum gallate powders

Powder compositions of LaGaO3, La0.9Sr0.1GaO2.95, and La0.8Sr0.5Ga0.83Mg0.17O2.815 were prepared via a Pechini-type process that uses citric acid and ethylene glycol. The calcination behavior of the precursor powders of the above mentioned phases was studied in the temperature range of 200 degrees -1400 degreesC in an air atmosphere. Characterization of the powder samples mere performed using several processes, including X-ray diffractometry, thermogravimetry/differential thermal analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, inductively coupled plasmaatomic emission spectroscopy, and carbon and nitrogen analyses.