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Abstract：
The sol-gel method in combination with spark plasma sintering (SPS) has been applied to prepare NaNbO3 fine-grained ceramics. The results reveal that perovskite type NaNbO3 nano-powders with mean size of 40 nm can be synthesized by an aqueous sol-gel route. Subsequently, using the resulted NaNbO3 nano-powders as precursors, dense ceramics with mean grain size of 1 similar to 2 mu m are obtained by SPS method. The electrical measurement confirms that the defect dipoles play the roles in assisting antiferroelectric to ferroelectric (AFE-FE) phase transition. Moreover, the dielectric constant exhibits good frequency stability and the loss tangent is as low as 0.018 (1 kHz).
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RARE METAL MATERIALS AND ENGINEERING
ISSN： 1002-185X
Year： 2018
Volume： 47
Page： 70-74
0 . 7 0 0
JCR@2022
ESI Discipline： MATERIALS SCIENCE;
ESI HC Threshold：260
JCR Journal Grade：4
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SCOPUS Cited Count：
ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 1
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