Domain merging in LaBGeO5 single crystals

被引：0
|
作者：
Plashinnov, K. S. [1 ]
Akhmatkhanov, A. R. [1 ]
Nebogatikov, M. S. [1 ]
Milov, E., V [2 ]
Shnaidshtein, I., V [2 ]
Shur, V. Ya [1 ]
机构：
[1] Ural Fed Univ, Sch Nat Sci & Math, Ekaterinburg, Russia
[2] Lomonosov Moscow State Univ, Fac Phys, Moscow, Russia
来源：
FERROELECTRICS | 2021年 / 575卷 / 01期
基金：
俄罗斯科学基金会;
关键词：
Polarization reversal; domain structure kinetics; domain merging; ferroelectric; Cherenkov-type second harmonic generation; POLARIZATION;
D O I：
10.1080/00150193.2021.1888238
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
LaBGeO5 crystals emerged as the most promising candidates for UV laser sources based on a frequency conversion. Creation of periodical domain structures in LaBGeO5 for frequency conversion requires control of domains merging. Here, we studied domain structure evolution during domain merging with Cherenkov-type SHG microscopy. In low fields, two scenarios of domain merging were distinguished: "shape stability effect" and "jerky wall motion effect". The formation of concave angles after merging led to appearance of fast domain walls. In high fields, the difference between slow and fast wall velocities diminished and merging did not result in domain wall acceleration.
引用
收藏
页码：151 / 157
页数：7
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