Significantly enhanced ferroelectric and dielectric properties in BaTiO3/LaNiO3 superlattices

被引：6
|
作者：
Lin, Jun Liang [1 ,2 ]
Wang, Zhan Jie [1 ,2 ,3 ]
Zhao, Xiang [1 ]
Zhang, Zhi Dong [2 ]
机构：
[1] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[3] Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
来源：
SCRIPTA MATERIALIA | 2020年 / 179卷 / 179期
关键词：
BaTiO3; Superlattice; Laser deposition; Microstructure; Electrical properties;
D O I：
10.1016/j.scriptamat.2020.01.010
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
BaTiO3/LaNiO3 (BTO/LNO) ferroelectric superlattices with different stacking periods have been prepared by pulsed laser deposition (PLD). Compared to the pure BTO films, the BTO/LNO superlattices have significantly enhanced ferroelectric and dielectric properties. This is because, in addition to the strain effect, the accumulated oxygen vacancies in each ultra-thin LNO layer can change the depolarization field and reduce the leakage current in the superlattices. The results indicate that the use of ultra-thin metallic oxide layers as the constituent material of the ferroelectric superlattices is a feasible and effective way to improve the properties of superlattices. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：102 / 106
页数：5
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