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A Novel Spray‐Pyrolysis Technique to Produce Nanocrystalline Lanthanum Strontium Manganite Powder
Author(s) -
Kumar Abhoy,
Devi Parukuttyamma Sujatha,
Sharma Abhijit Das,
Maiti Himadri Sekhar
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00152.x
Subject(s) - nanocrystalline material , materials science , calcination , lanthanum manganite , chemical engineering , lanthanum , thermal spraying , powder diffraction , solid oxide fuel cell , spray pyrolysis , thermal analysis , exothermic reaction , inorganic chemistry , chemistry , thermal , nanotechnology , catalysis , crystallography , organic chemistry , thin film , anode , engineering , electrolyte , coating , physics , electrode , meteorology
Nanocrystalline, single phase, and highly homogeneous La 0.84 Sr 0.16 MnO 3 (LSM) powder was prepared by a unique spray‐pyrolysis process for solid oxide fuel cell applications. Atomization of a citrate–nitrate precursor solution consisting of La 3+ , Sr 2+ , and Mn 2+ ions in the molar ratio 0.84:0.16:1.0, which can initiate a controlled exothermic anionic oxidation‐reduction reaction leading to a self‐propagating auto‐ignition (self‐ignition) reaction within individual droplets led to the conversion of the precursor to their corresponding single‐phase LSM powder. Characterization of the as‐sprayed and calcined products by X‐ray powder diffraction, thermal analysis, and microstructural analysis confirmed the formation of nanocrystalline single‐phase LSM powder by this process.