Direct observation of domain kinetics in rhombohedral PMN-28PT single crystals during polarization reversal

被引：10
|
作者：
Ushakov, A. D. [1 ]
Esin, A. A. [1 ]
Akhmatkhanov, A. R. [1 ]
Hu, Q. [2 ,3 ]
Liu, X. [1 ,2 ,3 ]
Zhao, Y. [1 ,2 ,3 ]
Andreev, A. A. [1 ]
Wei, X. [2 ,3 ]
Shur, V. Ya. [1 ]
机构：
[1] Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg 620000, Russia
[2] Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Shaanxi, Peoples R China
[3] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian 710049, Shaanxi, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2019年 / 115卷 / 10期
基金：
对外科技合作项目（国际科技项目）;
关键词：
NIOBATE;
D O I：
10.1063/1.5114885
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Relaxor-based ferroelectric crystals of lead magnesium niobate-lead titanate (PMN-PT) are attracting great attention due to their prominent piezoelectric properties. Moreover, an enhancement of the integral properties requires the deep understanding of domain kinetics and domain structure evolution for application of the domain engineering techniques in relaxor-PT materials. Here, we demonstrate the results of studying the domain structure evolution by direct optical imaging during polarization reversal in [111]-oriented rhombohedral PMN-PT single crystals. Three domain types involved in the switching process have been revealed. The following consequent stages of the domain structure evolution have been separated: (I) nucleation and growth of a up arrow-domains and 2a-CDW and (II) nucleation and growth of c down arrow-domains. The undesirable effect of the partial backswitching during the electric field decrease was attributed to the clamped switching conditions.
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页数：4
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