Sol-gel fabrication of transparent ferroelectric (K,Na)NbO3/La0.06Ba0.94 SnO3 heterostructure

被引:0
|
作者
Zhuo, Hao [1 ,2 ]
Li, Teng [1 ,2 ]
Hu, Shudong [1 ,2 ]
Shao, Botao [1 ,2 ]
Wu, Yanqi [3 ]
Zeng, Fanda [3 ]
Xu, Liqiang [4 ]
Chen, Feng [1 ]
机构
[1] Chinese Acad Sci, Anhui Prov Key Lab Low Energy Quantum Mat & Device, High Magnet Field Lab, HFIPS, Hefei 230031, Anhui, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Peoples R China
[3] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[4] Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China
基金
中国国家自然科学基金;
关键词
Lead-free ferroelectric film; Transparent ferroelectric heterostructure; KNN; Sol-gel; THIN-FILMS; ELECTRICAL-PROPERTIES; DEPOSITION; THICKNESS;
D O I
10.1016/j.ceramint.2024.09.272
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
Lead-free K0.5Na0.5NbO3 (KNN) ferroelectric film and transparent La0.06Ba0.94SnO3 (LBSO) bottom electrode are fabricated on (001)-oriented SrTiO3 (STO) substrate by sol-gel. The characterization results confirm an epitaxial relationship between the films and the substrate, as well as a uniform structure and good crystallization quality of the films. The optical measurement shows that the film heterostructure exhibit a high transmittance with a maximum transmittance of similar to 80 %. The polarization-electric field (P-E) curves demonstrate that the twice remanent polarization value of the similar to 500 nm thick KNN film reaches up to 28 mu C/cm(2) under an electric field of 800 kV/cm, and the effective piezoelectric strain constant (d(33)*) is measured as 24.8p.m./V. The dielectric properties of the film are displayed, and the leakage behavior can be divided into three stages of Ohmic conduction, Schottky emission and Poole-Frenkel emission with increasing the applied electric field. This study indicates that transparent lead-free ferroelectric KNN heterostructures can be prepared using a cost-effective solgel method and shows promise for future applications.
引用
收藏
页码:49277 / 49284
页数:8
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