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2005 | 3 | 2 | 263-278

Article title

Synthesis and characterization of Mn-, La-Mn- and La-Ca-Mn-citrates as precursors for LaMnO3 and La1−xCaxMnO3


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Mn-, LaMn- and LaCaMn-citrates were synthesized at 60–120°C in ethylene glycol medium using chlorides or nitrates as metal sources. Their composition, IR spectra and thermal decomposition were studied. Equimolar La/Mn ratio has been established in the complex, prepared from chloride solution with the same initial composition of the metals. In the isolated three-metallic complex the molar ratio of the metals deviates from the composition in the initial solution. The final products of the heating of Mn- and mixed-metal LaMn-citrates at 1000°C are phase-homogeneous Mn3O4 (hausmannite) and LaMnO3 respectively. Parasitic phase(s) are observed in LaxCa1−xMnyO3, produced from LaCaMn-citrate.










Physical description


1 - 6 - 2005
1 - 6 - 2005


  • Faculty of Chemistry, University of Sofia, 1, “J. Bourchier” Blvd., 1164, Sofia, Bulgaria
  • Faculty of Chemistry, University of Sofia, 1, “J. Bourchier” Blvd., 1164, Sofia, Bulgaria


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