REIS, S.L.GROSSO, R.L.MUCCILLO, E.N.S.2021-12-152021-12-152021REIS, S.L.; GROSSO, R.L.; MUCCILLO, E.N.S. Thermal and spectroscopic characterization of sol-gel-synthesized doped lanthanum gallate. <b>Journal of Thermal Analysis and Calorimetry</b>, v. 146, n. 4, p. 1561-1567, 2021. DOI: <a href="https://dx.doi.org/10.1007/s10973-020-10113-2">10.1007/s10973-020-10113-2</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32405.1388-6150http://repositorio.ipen.br/handle/123456789/32405In this study, a complex oxide solid solution consisting of lanthanum gallate with partial substitutions for strontium and magnesium (La0.9Sr0.1Ga0.8Mg0.2O2.85) was synthesized by the sol–gel route, aiming to obtain a sinter active powder and a final material that could be stoichiometrically controlled. The thermal behavior of the synthesized powder involves several steps of decomposition. The linear shrinkage of green compacts up to 1500 °C was 31%. The bulk conductivity of sintered specimens increases with sintering temperature up to 1400 °C. The stoichiometry was maintained for sintering temperatures up to 1450 °C. Elemental mapping obtained by energy-dispersive spectroscopy evidenced magnesium segregation at the grain boundaries. The overall results evidence the suitability of the synthesis method for preparing doped lanthanum gallate.1561-1567openAccessthermal gravimetric analysisdifferential thermal analysislanthanum compoundspowderssynthesisArtigo de periódico414610.1007/s10973-020-10113-20000-0001-9219-388Xhttps://orcid.org/0000-0001-9219-388X73.2386.00