Synthesis and morphology of anisotropic NaNbO3 seed crystals

Yunfei Chang; Zupei Yang; Xiaolian Chao; Zonghuai Liu; Zenglin Wang

doi:10.1016/j.matchemphys.2008.04.031

Synthesis and morphology of anisotropic NaNbO₃ seed crystals

Yunfei Chang, Zupei Yang, Xiaolian Chao, Zonghuai Liu, Zenglin Wang

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Large platelet NaNbO₃ (NN) seed crystals have been successfully synthesized from bismuth layer-structured ferroelectric Bi_2.5Na_3.5Nb₅O₁₈ (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.

Original language	English (US)
Pages (from-to)	195-200
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	111
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2008.04.031
State	Published - Oct 15 2008

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics

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10.1016/j.matchemphys.2008.04.031

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@article{3915c04f86d74d2a92f4022936094840,

title = "Synthesis and morphology of anisotropic NaNbO3 seed crystals",

abstract = "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.",

author = "Yunfei Chang and Zupei Yang and Xiaolian Chao and Zonghuai Liu and Zenglin Wang",

year = "2008",

month = oct,

day = "15",

doi = "10.1016/j.matchemphys.2008.04.031",

language = "English (US)",

volume = "111",

pages = "195--200",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier BV",

number = "2-3",

}

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

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SN - 0254-0584

VL - 111

SP - 195

EP - 200

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 2-3

ER -

Synthesis and morphology of anisotropic NaNbO₃ seed crystals

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