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Nano-structured self-assembled LaCrO 3 thin film deposited by RF-magnetron sputtering on a stainless steel interconnect material
Journal article   Peer reviewed

Nano-structured self-assembled LaCrO 3 thin film deposited by RF-magnetron sputtering on a stainless steel interconnect material

Christopher Johnson, Randall Gemmen, Nina Orlovskaya and Charles A Johnson
Composites. Part B, Engineering, v 35(2), pp 167-172
2004

Abstract

Amorphous to crystalline phase transition Lanthanum chromite Micro-Raman spectroscopy Perovskite Self-assembled nano-structure Solid oxide fuel cells Thin film
The deposition of an amorphous La–Cr–O thin film on a stainless steel was done by radio frequency magnetron sputtering to obtain a protective coating on the metallic interconnect for solid oxide fuel cells. The deposited film was amorphous, but underwent two-phase transformations to the perovskite structure as a result of annealing at 700 °C for 1 h. The first transformation was from amorphous to the monoclinic LaCrO 4 monazite type compound. The second transformation was from LaCrO 4 to orthorhombic LaCrO 3 perovskite. As a result of the phase transformation nano-structured self-assembled dendritic structure was formed with the desired perovskite phase. The structural characterization of the film was done by X-ray diffraction, phase shift microscopy, scanning electron microscopy with energy dispersive X-ray analysis, and micro-Raman spectroscopy.

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Collaboration types
Domestic collaboration
Web of Science research areas
Engineering, Multidisciplinary
Materials Science, Composites
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