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IJSTR >> Volume 5 - Issue 4, April 2016 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Spectroscopic And Electrical Properties Of Strontium - Doped Lanthanum Manganite Thin Films For SOFC

[Full Text]



B. S. Kamble, V. J. Fulari, R. K. Nimat



Spray Pyrolysis, Cathode, LSM, SOFC.



Strontium-doped lanthanum manganite (La1-xSrxMnO3-δ-LSM) has received much attention in recent years. Most studies have concentrated on thin film samples at low temperatures. La1-xSrxMnO3-δ (LSM) has proved to be efficient cathode material for solid oxide fuel cell (SOFC). In the present work the strontium-doped lanthanum manganite (La0.9Sr0.1MnO3-δ) were synthesized by spray pyrolysis technique in the thin film form on alumina substrate which was characterized by X-ray diffraction, scanning electron microscopy. The spectroscopic properties such as IR, FT-Raman have been studied. The temperature dependence resistivity and Dielectric constant was carried out at different frequencies. Film thickness measurement was carried out by using surface profilometer. X-ray diffraction results clearly indicated that sintered LSM at 900oC for 2 hours show the formation of single phase solid solution with pervoskite like structure. Crystalline size has been calculated by SEM microscopy. Resistivity of LSM thin film decreases as absolute temperature increases and Dielectric constant suddenly decreases at low frequency and became constant as frequency increases. The film thickness is about 200 nm and roughness of the sample is 4000Ao.



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