Bi0.5Na0.5TiO3:ZnO lead-free piezoelectric composites with deferred thermal depolarization
Bi0.5Na0.5TiO3:ZnO lead-free piezoelectric composites with deferred thermal depolarization
复制标题
延迟热去极化Bi0.5Na0.5TiO3:ZnO无铅压电复合材料
DOI：
10.1063/1.4922494
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发表时间：
2015-06
影响因子：
4
通讯作者：
Zhang Shan-Tao
中科院分区：
文献类型：
--
作者：
Zhang Ji;Pan Zhao;Nie Peng-Xiao;Cui Yu-Shuang;Yang Bin;Chen Jun;Zhang Shan-Tao
Bi0.5Na0.5TiO3 （BNT）是最有前途的无铅压电材料之一。然而，BNT的去极化是实际应用的长期障碍。在这里，我们报道了Bi0.5Na0.5TiO3:xZnO的压电复合材料（BNT:xZnO，其中x是ZnO与BNT的摩尔比）延迟了热退极化。当x从0增加到0.4时，观察到的退极化温度（Td）倾向于延迟到x = 0.3附近，正如温度相关的介电、铁电和压电测量所证实的那样。结果表明，极化复合材料经125℃退火后仍能保持良好的压电性能。提出了ZnO产生的电荷可以有序分布形成局部场，从而保持BNT的极化状态，从而抑制去极化，即使在去除外部极化场后也是如此。这些结果可能为基于bnt的压电陶瓷的应用铺平道路，并显著提高我们对…
Bi0.5Na0.5TiO3 (BNT) is among the most promising lead-free piezoelectric candidates. However, depolarization of BNT is a longstanding obstacle for practical applications. Here, we report that piezoelectric composites of Bi0.5Na0.5TiO3:xZnO (BNT:xZnO, where x is the mole ratio of ZnO to BNT) have deferred thermal depolarization. With increasing x from 0 to 0.4, the observed depolarization temperature (Td) tends to be deferred near x = 0.3, as confirmed by temperature dependent dielectric, ferroelectric, and piezoelectric measurements. As the result, the piezoelectric properties of the composites can be well maintained even after the poled composites are annealed at 125 °C. It is proposed that the charges stemming from ZnO can be orderly distributed to form a local field, which can keep the poling state of BNT, thus suppress the depolarization, even after the external poling filed is removed. These results may pave the way for applications of BNT-based piezoceramics and significantly improve our understandi...
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影响因子：
1.7
作者：
Shujun Zhang;R. Xia;T. Shrout
通讯作者：
Shujun Zhang;R. Xia;T. Shrout
DOI：
10.1109/tuffc.2009.1224
发表时间：
2009-07
期刊：
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
影响因子：
--
作者：
T. Takenaka;H. Nagata;Y. Hiruma
通讯作者：
T. Takenaka;H. Nagata;Y. Hiruma
影响因子：
3.2
作者：
Jo, Wook;Schaab, Silke;Roedel, Juergen
通讯作者：
Roedel, Juergen
影响因子：
3.7
作者：
V. Shuvaeva;D. Zekria;A. Glazer;Q. Jiang;S. Weber;P. Bhattacharya;P. Thomas
通讯作者：
V. Shuvaeva;D. Zekria;A. Glazer;Q. Jiang;S. Weber;P. Bhattacharya;P. Thomas
影响因子：
5.7
作者：
Senda Saı̈d;J. Mercurio
通讯作者：
Senda Saı̈d;J. Mercurio