Details

Autor(en) / Beteiligte

• Yan, Yongke
• Liu, Dan
• Zhao, Wei
• Zhou, Heping
• Fang, Hui

Titel

Topochemical Synthesis of a High-Aspect-Ratio Platelet NaNbO3 Template

Ist Teil von

• Journal of the American Ceramic Society, 2007-08, Vol.90 (8), p.2399-2403

Ort / Verlag

Malden, USA: Blackwell Publishing Inc

Erscheinungsjahr

2007

Quelle

Wiley Blackwell Single Titles

Beschreibungen/Notizen

• 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.