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Sodium niobate nanopowders (N-NaNbO3) and submicron powders (M-NaNbO3) were synthesized by the solvothermal and hydrothermal route, respectively. Subsequently, their sintering activities were comparably investigated through a modified solid-state sintering process. It's found that N-NaNbO3 green bodies presented an apparent shrinkage after the calcination at 650°C, and dense N-NaNbO3 ceramics can...
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