Journal
FERROELECTRICS
Volume 457, Issue 1, Pages 82-88Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00150193.2013.848755
Keywords
SrTiO3; sol-gel; chelation
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SrTiO3 nanoparticles were synthesized by sol-gel method using acetic acid as a chelating agent. Complete decomposition from thermogravimetric analysis occurred at 650 degrees C. The -OH ligand should be gradually replaced by the acetyl group, slowing down the reactivity between the Ti and Sr cations. X-rays diffraction demonstrated only SrC2O4 with a small trace of anatase TiO2 between 400 degrees C and 500 degrees C. Perovskite peaks were observed starting at 600 degrees C. The crystallite sizes were smaller at higher amount of acetic acid; this could be explained by retardation in the hydrolysis reaction. The nanoparticles were isotropic in shape with agglomeration due to partial sintering.
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