Structural, morphological and electrical properties of La1-xSrxAlO3-delta(x=0, 0.1, 0.15) synthesized by the Pechini method
Bouremmad, Farida and Benabbas, Abderrahim and Bouridah, Hachemi and Rida, Kamel and Shawuti, Shalima and Gülgün, Mehmet Ali (2012) Structural, morphological and electrical properties of La1-xSrxAlO3-delta(x=0, 0.1, 0.15) synthesized by the Pechini method. Acta Chimica Slovenica, 59 (4). pp. 927-933. ISSN 1318-0207 (Print) 1580-3155 (Online)
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La1-xSrxAlO3-delta (x = 0, 0.1, 0.15) fine particles were prepared by the Pechini process using citric acid and ethylene glycol at low temperature 900 degrees C. The powders were studied by several physical characterization techniques. The FTIR spectrum of the resin treated at 200 degrees C revealed the formation of a metalorganic complex and a polymerized form of ethylene glycol. XRD spectra of the samples, calcined at 900 degrees C, illustrated a single phase LaAlO3. However, La0.9Sr0.1AlO3-delta and La0.85Sr0.15AlO3-delta powders mainly consist of a deficient hexagonal perovskite phase with a small amount of a second phase (LaSrAl3O7). Ionic conductivities of these materials were studied by impedance spectroscopy in the range of 100-700 degrees C in air.
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