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The grain coarsening in dense nanocrystalline gadolinia-doped ceria (CGO) and CeO 2 was studied for the grain size regime from 10 to 250nm. Dense ceria-based thin films were prepared by spray pyrolysis and pulsed laser deposition on sapphire substrates. The small grain-sized CGO and CeO 2 microstructures were surprisingly stable and showed self-limited grain growth and relaxation of...
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