Microstructure, dielectric and ferroelectric properties of (NaxBi0.5)0.94Ba0.06TiO3 lead-free ferroelectric ceramics: Effect of Na nonstoichiometry
Microstructure, dielectric and ferroelectric properties of (NaxBi0.5)0.94Ba0.06TiO3 lead-free ferroelectric ceramics: Effect of Na nonstoichiometry
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(NaxBi0.5)0.94Ba0.06TiO3无铅铁电陶瓷的微观结构、介电和铁电性能：Na非化学计量的影响
DOI：
10.1016/j.matchemphys.2011.11.039
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发表时间：
2012-02
影响因子：
4.6
通讯作者：
Zhou Jian-ping
中科院分区：
文献类型：
--
作者：
Xiao-ming Chen;Ma Hai-yan;Pan Wen-yue;Pang min;Liu Peng;Zhou Jian-ping
采用高能球磨粉固相反应法制备了x=0.54、0.50、0.46、0.45的（NaxBi0.5）0.94 ba0.06 tio3无铅铁电陶瓷。所有陶瓷均表现出abo3钙钛矿相的典型衍射峰。当x=0.45时，陶瓷中出现二次相峰。四方相的相对量与Na的量有关。钠非化学计量对陶瓷的平均晶粒尺寸的影响可以忽略不计。陶瓷中Na的缺乏削弱了其介电异常，对应于从铁电相到所谓的“中间相”的转变。对于具有Na非化学计量的陶瓷，从“中间相”到准电相转变的扩散程度增加。随着钠量由过量到不足的变化，“去极化温度”升高。不同Na含量的陶瓷的介电性能和铁电性能的差异与Na和/或氧空位的产生有关。
(NaxBi0.5)0.94Ba0.06TiO3lead-free ferroelectric ceramics with x=0.54, 0.50, 0.46, and 0.45 were prepared by solid state reaction of high energy ball milled powders. All ceramics exhibited typical diffraction peaks of ABO3perovskite phase. A secondary phase peak was observed in the ceramic with x=0.45. Relative amount of tetragonal phase was related to the amount of Na. The Na nonstoichiometry produced an ignorable effect on the mean grain size of the ceramics. The deficiency of Na in the ceramics weakened their dielectric anomalies corresponding to the transition from ferroelectric phase to the so-called “intermediate phase”. For the ceramics with Na nonstoichiometry, the degree of diffuseness of the transition from the “intermediate phase” to paraelectric phase increased. With changing Na amount from excess to deficiency, the “depolarization temperature” increased. The difference in dielectric and ferroelectric properties among the ceramics with various Na amount was associated with the generation of Na and/or oxygen vacancies.
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影响因子：
4
作者：
Qing Xu;Yu-Heng Huang;Min Chen;Wen Chen;Bok-Hee Kim;B. Ahn
通讯作者：
Qing Xu;Yu-Heng Huang;Min Chen;Wen Chen;Bok-Hee Kim;B. Ahn
影响因子：
5.7
作者：
J. Suchanicz;J. Kusz;H. Böhm;H. Duda;J. Mercurio;K. Konieczny
通讯作者：
J. Suchanicz;J. Kusz;H. Böhm;H. Duda;J. Mercurio;K. Konieczny
影响因子：
3.9
作者：
Seung-Eek Park;Su-jin Chung;In-Tae Kim
通讯作者：
Seung-Eek Park;Su-jin Chung;In-Tae Kim
DOI：
--
发表时间：
2013
期刊：
--
影响因子：
--
作者：
C. Crowder;J. Faber;S. Gates;A. Gindhart;O. Gourdon;S. Kabekkodu
通讯作者：
C. Crowder;J. Faber;S. Gates;A. Gindhart;O. Gourdon;S. Kabekkodu
DOI：
10.1063/1.3193544
发表时间：
2009-07
期刊：
arXiv: Materials Science
影响因子：
--
作者：
C. Tai;Y. Lereah
通讯作者：
C. Tai;Y. Lereah