Manganese oxides, well known as manganites, have stimulated a renewed scientific interest for recent years because of their intriguing physical properties arising from the strong interplay between spin, charge and lattice degrees of freedom in these phases [1] and they have potential applications in areas such as electronics, photonics and mechanics devices [1, 2]. Herein, we report on the single-source synthesis of barium manganite oxide synthesized from coordination molecular precursor by thermal decomposition method. The heterometallic polymeric complex (Mn-Ba-2,3-PDC) (1) designed by reactions of coordination chemistry and characterized by single X-ray analysis [3] has been used. The sample after decomposition has been identified by powder X-ray diffraction (XRD) method and characterized by SEM-EDX spectroscopy. The XRD pattern (fig.b) revealed that all diffraction peaks were perfectly attributed to hexagonal phase of BaMnO3 perovskite with lattice constants: a=b=5.697(2) Å , c=4.8131(18) Å (ICDD Nr. 00-026-0168) and no other peaks of secondary phase were detected. The SEM micrograph showed (fig. a) the sample consists of numerous grained particles with the diameters in the range of 50-300 nm and it is seen from the image has a high surface area. The EDX result confirms the formation of oxide with the chemical composition very close to the stoichiometric ratio of pure BaMnO3 phase. Scanning electron micrographs (a), XRD pattern and crystallite size (in situ) (b) of BaMnO3 nanopowder obtained from coordination molecular precursor [1] N.Hambad, B.Bouhafs, Physica 2010, B405, 4595; [2] S.Satapathy, M.K.Singh, P.Pandit, P.K. Gupta, App.Phys.Lett. 2012, 042904; [3] A.Lazarescu, N.Terenti, E.Melnic et.all, The 8th Intern.Conf. on Material Science and Condensed Matter Physics (MSCMP-2016), Sept.,12-16, 2016, Chisinău, Book of Abstr. (DSCM 8P), p. 132.
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