Large and electric field tunable superelasticity in BaTiO3 crystals predicted by an incremental domain switching criterion
Large and electric field tunable superelasticity in BaTiO3 crystals predicted by an incremental domain switching criterion
复制标题
通过增量域切换准则预测 BaTiO3 晶体中的大电场可调超弹性
DOI：
10.1063/1.4795330
复制
发表时间：
2013-03-04
影响因子：
4
通讯作者：
Fang, D. N.
中科院分区：
文献类型：
--
作者：
Li, Y. W.;Ren, X. B.;Fang, D. N.
超弹性在形状记忆合金中很常见，但在铁电陶瓷中很难实现，在正常的铁电单晶中从未出现过。在本文中，我们证明了在所提出的增量90度域转换准则的引导下，通过沿极化方向施加正直流偏置电场的压缩加载/卸载，在特殊极化的BaTiO_3晶体立方体中实现了高达0.85%的大的电场可调的超弹性应变。此外，可调超弹性材料具有高达0.76的大减振系数，在智能减振装置中具有很好的应用前景。(C)2013年美国物理研究所。[http://dx.doi.org/10.1063/1.4795330]
Superelasticity is very common in shape memory alloys but is rather difficult to realize in ferroelectric ceramics and had never appeared in normal ferroelectric single crystals. Here we show that guided by a proposed incremental 90 degrees domain switching criterion, large and electricfield-tunable superelastic strains up to 0.85% has been realized in a specially poled BaTiO3 crystal cube via compression loading/unloading with a positive dc bias electric field along the poling direction. Moreover, the tunable superelasticity has a large damping factor of up to 0.76, which is very promising in intelligent damping devices. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4795330]