Physiochemical properties of combustion synthesized La0.6Sr0.4Co0.8Fe0.2O3−δ perovskite: A role of fuel to oxidant ratio. (December 2015)

• Record Type: Journal Article
• Authors: Jamale, Atul P.; Shanmugam, Sangaraju; Bhosale, C.H.; Jadhav, L.D.
• Is Part Of: Materials science in semiconductor processing. Volume 40(2015:Dec.)
• Page Start: 855
• Page End: 860
• Publication Date: 2015-12
• Subjects: Solution combustion synthesis -- Agglomeration -- Catalytic activity; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2015.07.091
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: The solution combustion synthesis is a novel approach to synthesize the nanocrystalline materials with an unexpectedly high surface to volume ratio. Thus, in present paper, La0.6 Sr0.4 Co0.8 Fe0.2 O3− δ powders have been synthesized by solution combustion synthesis route at different fuel to oxidant ratio ( ψ ) and its effect on different physiochemical properties have been studied. The mode of propagation of combustion reaction changed from smoldering to volume with increasing ψ . The thermal analysis shows that exothermicity increased with ψ resulting into enhanced agglomeration as confirmed from particle size distribution. Typically, the size of agglomerate varies from 0.59 to 1.56 μm. The XRD and FT-IR patterns reveal that the phase pure La0.6 Sr0.4 Co0.8 Fe0.2 O3−δ is formed at the ψ =2. The TEM particles size is 25 nm. La0.6 Sr0.4 Co0.8 Fe0.2 O3−δ powder shows the higher catalytic activity at about 426 °C.