Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61018
Title: Hydrothermal preparation and characterization of sheet-like (KxNa1-x)NbO3 perovskites
Authors: Zhang, D
Cheng, Z
Cheng, J
Shi, F
Yang, X
Zheng, G 
Cao, M
Keywords: Heat treatment
Hydrothermal synthesis
Lead-free piezoelectrics
Perovskite sheets
Issue Date: 2016
Publisher: Pergamon Press
Source: Ceramics international, 2016, v. 42, no. 7, p. 9073-9078 How to cite?
Journal: Ceramics international 
Abstract: (KxNa1-x)NbO3 (KNN) powders with sheet-like morphologies were successfully prepared by the hydrothermal synthesis route combined with subsequent heat-treatment processes. When the heat-treated temperature was 600 °C, the (KxNa1-x) NbO3 (0.6≤x≤0.7) perovskite sheets were obtained in the KNN powders. The surface morphology and crystal structure of the KNN sheets were investigated by scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM), respectively. The KNN sheets were in a well-defined hexagonal shape with a thickness of about 100-200 nm and a diameter of 1.5-3 μm. The chemical structure of the KNN sheets was analyzed using Fourier Transform infrared spectroscopy (FTIR) and Raman spectroscopy. A growth mechanism for the sheet-like microstructures was discussed.
URI: http://hdl.handle.net/10397/61018
ISSN: 0272-8842
EISSN: 1873-3956
DOI: 10.1016/j.ceramint.2016.02.170
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