Vortex domain structure in ferroelectric nanoplatelets and control of its transformation by mechanical load.
Vortex domain structure in ferroelectric nanoplatelets and control of its transformation by mechanical load.
复制标题
铁电纳米片中的涡畴结构及其机械载荷对其转变的控制
DOI：
10.1038/srep00796
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发表时间：
2012
影响因子：
4.6
通讯作者：
Wang, Biao
中科院分区：
文献类型：
--
作者：
Chen, W. J.;Zheng, Yue;Wang, Biao
低维铁电体和多铁性材料中的涡旋畴模式已被广泛研究，目的是开发纳米功能器件。然而，涡域结构的控制还没有得到系统的研究。考虑到不均匀的机电场，环境温度，表面和尺寸的影响，我们证明了显着的影响，在铁电纳米片的涡旋畴结构的机械负载。我们的分析表明，偶极涡的大小和数量可以通过机械载荷控制，并产生丰富的温度-应力（T-S）相图。模拟结果还表明，在机械载荷的作用下，涡旋态之间的转换是可能的，这与传统的电场控制涡旋态的方式完全不同。这些结果与涡旋畴结构在铁电纳米器件中的应用有关，并为包括存储器、机械传感器和换能器在内的应用提供了一条新的途径。
Vortex domain patterns in low-dimensional ferroelectrics and multiferroics have been extensively studied with the aim of developing nanoscale functional devices. However, control of the vortex domain structure has not been investigated systematically. Taking into account effects of inhomogeneous electromechanical fields, ambient temperature, surface and size, we demonstrate significant influence of mechanical load on the vortex domain structure in ferroelectric nanoplatelets. Our analysis shows that the size and number of dipole vortices can be controlled by mechanical load and yields rich temperature-stress (T-S) phase diagrams. Simulations also reveal that transformations between “vortex states” induced by the mechanical load are possible, which is totally different from the conventional way controlled on the vortex domain by the electric field. These results are relevant to application of vortex domain structures in ferroelectric nanodevices and suggest a novel route to applications including memories, mechanical sensors and transducers.
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影响因子：
3.2
作者：
Li, YL;Cross, LE;Chen, LQ
通讯作者：
Chen, LQ
影响因子：
3.7
作者：
KRETSCHMER, R;BINDER, K
通讯作者：
BINDER, K
铁电纳米片中涡旋域结构应力控制的相场模拟
影响因子：
4
作者：
Chen, W. J.;Zheng, Yue;Wang, Biao
通讯作者：
Wang, Biao
影响因子：
3.7
作者：
Hong, Jiawang;Catalan, G.;Scott, J. F.
通讯作者：
Scott, J. F.
影响因子：
64.8
作者：
Naumov, II;Bellaiche, L;Fu, HX
通讯作者：
Fu, HX