Publication date: 29 January 2016
Source:Thin Solid Films, Volume 599
Author(s): Jun-Sik Park, Young-Beom Kim
By employing strontium as a dopant of lanthanum cobaltite (LaCoO3 ), strontium-doped lanthanum cobaltite (La1 Srx CoO3 , LSC) thin film was fabricated using a metal organic chemical solution deposition (MOCSD) method. Lanthanum nitrate hexahydrate [La(NO3 )3 6H2 O], strontium acetate [Sr(CH3 COO)2 ], and cobalt acetate tetrahydrate [Co(CH3 COO)2 4H2 O] were used as precursors. The coating process was performed through a spin coating method on a substrate, which were then heat treated under various temperature conditions. Electrical properties, microstructures, and crystalline structures with respect to sintering temperature were analyzed. According to these analyses, the change in surface morphology, phase shift, and conductive properties were closely related, which could explain their respective behaviors. Furthermore, sintered strontium-doped lanthanum perovskite oxides showed various conductivities according to the amount of dopant. With the molar ratio of strontium that is stoichiometrically equivalent to lanthanum (La0.5 Sr0.5 CoO3 ) thin film showed the best conductivity in the sintering temperature range of 650–700
Source:Thin Solid Films, Volume 599
Author(s): Jun-Sik Park, Young-Beom Kim
