Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies
Domain Structure and Enhanced Electrical Properties in Sodium Bismuth Titanate Ceramics Sintered from Crystals with Different Morphologies
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不同形貌晶体烧结钛酸铋钠陶瓷的域结构和增强的电性能
DOI：
10.1111/jace.14211
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发表时间：
2016-07
影响因子：
3.9
通讯作者：
Wang, Da-Wei
中科院分区：
文献类型：
--
作者：
Li, Bin;Cao, Mao-Sheng;Liu, Jia;Wang, Da-Wei
采用水热法合成了不同形貌的钛酸铋钠（Na 0. 5 Bi 0. 5 TiO 3，NBT）晶体，包括线状、片状和立方体。观察了极化NBT陶瓷中的畴结构。结果表明，线晶烧结的极化NBT陶瓷的畴宽略大于立方晶烧结的NBT陶瓷，而板晶烧结的NBT陶瓷的畴宽最大。其中，板状晶体烧结的极化NBT陶瓷的最佳压电系数和剩余极化率分别为87 pC/N和36.7 μC/cm 2，比立方晶体烧结的NBT陶瓷高55%和37%。NBT陶瓷的畴宽和晶粒尺寸的增大是提高其铁电、压电和介电性能的主要原因。
Sodium bismuth titanate (Na0.5Bi0.5TiO3, NBT) crystals with different morphology, wires, plates and cubes, were synthesized by hydrothermal method. The domain structure in as‐synthesized poled NBT ceramics was observed. The results demonstrate that the domain width of the poled NBT ceramics sintered from wire crystals is slightly larger than that of the NBT ceramics sintered from cube crystals, while the NBT ceramics sintered from plate crystals possess the largest domain width. In particular, the poled NBT ceramics sintered from plate crystals exhibit the optimum piezoelectric coefficient and remnant polarization of 87 pC/N and 36.7 μC/cm2, respectively, which are 55% and 37% higher than those of the NBT ceramics sintered from cube crystals. The expanded domain width and large grain size are responsible for the improvement of ferroelectric, piezoelectric, and dielectric properties in NBT ceramics.
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影响因子：
3.7
作者：
A. Malvezzi;M. J. Martins
通讯作者：
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影响因子：
3.7
作者：
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通讯作者：
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影响因子：
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