Effect of SrRuO3 layer thickness on electrical properties of Pb(Zr0.52Ti0.48)O3/SrRuO3 superlattices

被引：11

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：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 07期

关键词：

Superlattice; PZT/SRO; Pulsed laser deposition; Oxygen vacancy; Electrical properties; POLARIZATION; ENHANCEMENT; FIELD;

D O I：

10.1016/j.ceramint.2019.12.188

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Artificial ferroelectric superlattices have received considerable attention because of the potential to realize macro-performance adjustments and bring exotic phenomena. In recent years, it has been reported that metallic SrRuO3 with single-unit-cell thickness can be used as the constituent material of ferroelectric superlattices, but the effect of SrRuO3 thickness on ferroelectric properties is not clear. In this study, Pb(Zr0.52Ti0.48)O-3/SrRuO3 (PZT/SRO) ferroelectric/metallic superlattices with the thickness of SRO layers ranging from 1 to 3 unit cells have been grown on Nb:SrTiO3 substrates by pulsed laser deposition (PLD), and their structural and electrical properties are investigated. The experimental results show that the electrical properties of the PZT/SRO superlattices are greatly affected by the thickness of SRO layers, and the PZT(10)/SRO2 superlattice possesses the best electrical properties. The X-ray photoelectron spectroscopy (XPS) results show that oxygen vacancies are accumulated at the PZT/SRO interfaces, which can reduce the depolarization fields and the leakage current. The results demonstrate that the thickness of metallic conducive oxide in the ferroelectric/metallic superlattices is a key factor affecting their ferroelectric properties.

引用

页码：9328 / 9333

页数：6

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