TY - JOUR
T1 - Synthesis and morphology of anisotropic NaNbO3 seed crystals
AU - Chang, Yunfei
AU - Yang, Zupei
AU - Chao, Xiaolian
AU - Liu, Zonghuai
AU - Wang, Zenglin
PY - 2008/10/15
Y1 - 2008/10/15
N2 - Large platelet NaNbO3 (NN) seed crystals have been successfully synthesized from bismuth layer-structured ferroelectric Bi2.5Na3.5Nb5O18 (BNN) precursor by topochemical microcrystal conversion method. The effects of synthesis parameters, such as salt/oxide ratio, synthesis temperature and Na2CO3/BNN ratio, on the phase structure and morphology of both the BNN precursor and NN particles were investigated. The results show that large platelet BNN precursor with bismuth layer structure was obtained at 1125 °C with a salt-to-oxide weight ratio of 1.50:1. Besides, by optimizing the synthesis parameters, anisotropic NN seed crystals with pure perovskite phase were obtained at 975 °C with a Na2CO3/BNN molar ratio of 1.50:1. The obtained NN particles are very promising template for texturing (K, Na) NbO3-based ceramics by reactive-template grain growth method.
AB - Large platelet NaNbO3 (NN) seed crystals have been successfully synthesized from bismuth layer-structured ferroelectric Bi2.5Na3.5Nb5O18 (BNN) precursor by topochemical microcrystal conversion method. The effects of synthesis parameters, such as salt/oxide ratio, synthesis temperature and Na2CO3/BNN ratio, on the phase structure and morphology of both the BNN precursor and NN particles were investigated. The results show that large platelet BNN precursor with bismuth layer structure was obtained at 1125 °C with a salt-to-oxide weight ratio of 1.50:1. Besides, by optimizing the synthesis parameters, anisotropic NN seed crystals with pure perovskite phase were obtained at 975 °C with a Na2CO3/BNN molar ratio of 1.50:1. The obtained NN particles are very promising template for texturing (K, Na) NbO3-based ceramics by reactive-template grain growth method.
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U2 - 10.1016/j.matchemphys.2008.04.031
DO - 10.1016/j.matchemphys.2008.04.031
M3 - Article
AN - SCOPUS:47749147271
SN - 0254-0584
VL - 111
SP - 195
EP - 200
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
IS - 2-3
ER -