Evaluation of carbonate precursors in manganite coprecipitation synthesis by Fourier transform infrared (FTIR) spectroscopy

• Published in: Solid state communications Vol. 341; p. 114594
• Main Authors: Žužić, Andreja, Ressler, Antonia, Macan, Jelena
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2022
• Subjects: Coprecipitation; Doped manganites; FTIR analysis; Materials chemistry; FTIR analysis; Doped manganites; Coprecipitation; Materials chemistry
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/j.ssc.2021.114594

The simple perovskite oxides, manganites, are nowadays subject of extensive research because of their electrical, magnetic and photocatalytic properties. In this paper, manganites described with general formula A1-xSrxMnO3 (A = Ca, Ba, La) were prepared by the coprecipitation method. Precursors and calcined powders were analyzed by Fourier transform infrared (FTIR) spectroscopy and crystallization was studied by X-ray diffraction. In all systems, successfully doped manganites were obtained by coprecipitation. Positions and shapes of carbonate bands in carbonate precursors FTIR spectra were shown to be useful for screening successful syntheses of doped manganites, particularly in Ca1-xSrxMnO3 and La1-xSrxMnO3 systems. [Display omitted] •Sr-doped Ca, Ba and La-manganites were prepared by coprecipitation method.•The impact of pH value and temperature on precursor formation was investigated.•This paper presents the first successful coprecipitation synthesis of Ba1-xSrxMnO3.•The shift in FTIR band positions depending on Sr concentration was observed.•FTIR analysis was used to predict the formation of the target manganite phase.