Abstract
(Na,K)NbO3(NKN) films have been synthesized at 240oC on SUS316 substrates by a hydrothermal method. The starting chemicals were fixed to NaOH and Nb2O5 for the Na and Nb sources, respectively. On the other hand, the K source was selected from three different chemicals of KOH, K2CO3 or their mixtures. In this study, the effect of K2CO3 content in the starting chemicals on the crystallinity, microstructure, and chemical stoichiometry of the grown film was investigated. It was found that the carbonate source could affect the solution-precipitation mechanism for the growth of NKN film during the hydrothermal reaction.
