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.