Abstract
A high-aspect-ratio platelet sodium niobate (NaNbO3) was synthesized by a topochemical reaction. Plate-like layered-perovskite Bi2.5Na3.5Nb5O18 (BNN5) as a precursor was first prepared, and then Bi3+ in the precursor phase was replaced by Na+ through topotactic conversion and perovskite NaNbO3 formed at 950°C in NaCl molten salt. NaNbO3 crystals had an average length of 15 μm and a thickness of 0.5 μm. Scanning electron microscope and high-resolution transmission electron microscope analyses indicated that the retro-synthesis process of the desired perovskite NaNbO3 retained the morphological and structural features of the BNN5 precursor. It may be possible to synthesize other perovskite-structured templates using the same method.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2399-2403 |
| Number of pages | 5 |
| Journal | Journal of the American Ceramic Society |
| Volume | 90 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2007 |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry