Open AccessInfluence of NaCl on the formation of stoichiometric polycrystalline La0.85Na0.15MnO3
Author(s) -
R. Majumder,
Md. Nur Hossain,
Md. Akram Hossain,
M.S.I. Sarker
Publication year - 2019
Publication title -
bangladesh journal of scientific and industrial research
Language(s) - English
Resource type - Journals
eISSN - 2224-7157
pISSN - 0304-9809
DOI - 10.3329/bjsir.v54i4.44563
Subject(s) - lanthanum manganite , crystallite , materials science , sintering , manganite , scanning electron microscope , analytical chemistry (journal) , fourier transform infrared spectroscopy , flux method , lanthanum , stoichiometry , mineralogy , chemical engineering , crystallography , inorganic chemistry , metallurgy , chemistry , composite material , single crystal , electrode , condensed matter physics , physics , chromatography , ferromagnetism , engineering , electrolyte
Origination of defects and loss of Na during the sintering process are the major problems for the conventional solid-state synthesis technique to form sodium (Na) doped lanthanum manganite. To minimize defect and Na loss during the sintering process, the sodium (Na) doped lanthanum manganite with 15% substitution of La by Na (La0.85Na0.15MnO3) was synthesized using the NaCl flux material incorporated with the conventional solid-state reaction technique (flux method). The amount of micro strain, lattice strain and dislocation density for the flux method to grow polycrystalline La0.85Na0.15MnO3were detected successfully. The structural study using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive Analysis X-Ray (EDAX) showed that the use of flux synthesis technique instead of conventional solid-state reaction technique was satisfactory to obtain stoichiometric La0.85Na0.15MnO3 polycrystalline structure with a smaller defect. From the closer inspection of the XRD spectrum for La0.85Na0.15MnO3 significantly showed a higher order layered structure for the cathode material for using this flux technique, which is a very important feature to increase the efficiency of the cathode material.
Bangladesh J. Sci. Ind. Res.54(4), 289-296, 2019