Optical, electrical and magnetic properties of lanthanum strontium manganite La1−xSrxMnO3 synthesized through the citrate combustion methodElectronic supplementary information (ESI) available. See DOI: 10.1039/c6cp07333f

• Main Authors: Turky, Ali Omar, Rashad, Mohamed Mohamed, Hassan, Ali Mostafa, Elnaggar, Elsayed M, Bechelany, Mikhael
• Format: Journal Article
• Language: English
• Published: 01.03.2017
• ISSN: 1463-9076; 1463-9084
• DOI: 10.1039/c6cp07333f

Generally, strontium-doped lanthanum manganites (LSM) are materials connected ordinarily as cathodes in the solid oxide fuel cell (SOFC). In this study, the structural, optical, electrical and magnetic properties of La 1− x Sr x MnO 3 ( x = 0.2, 0.5, 0.8) synthesized using an organic acid precursor strategy were investigated, based on using citric acid as a fuel. Evidently, the results disclosed that a pure single monoclinic LSM phase was obtained from the thermally treated precursors annealed at 1000 °C with an annealing time of 2 h. The microstructure of the formed sample relied on the Sr 2+ ion content. Moreover, a good optical transparency of 45-60% in a wide range of wavelengths between 800 and 1800 nm for all samples substituted by Sr 2+ ions was performed. The optical band gap energy was increased from 2.09 to 2.76 eV by increasing the Sr 2+ ion molar ratios. The trend in the calculated refractive index, the high frequency dielectric constant ( α ) and the static dielectric constant ( 0 ) of all the produced samples can be linked to an increase in the Sr 2+ ion concentration. Moreover, the magnetic properties were enhanced with increasing Sr 2+ ion content. The role of strontium ion concentration on the optical, magnetic and electrochemical properties of lanthanum strontium manganite prepared by the citrate precursor method.