High-dielectric-tunability of ferroelectric (Pb, Sr)TiO3 thin films on (001) LaAlO3

被引：75

作者：

Liu, SW

Lin, Y

Weaver, J

Donner, W

Chen, X

Chen, CL ^{[1
]}

Jiang, JC

Meletis, EI

Bhalla, A

机构：

[1] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[2] Univ Houston, Dept Phys, Houston, TX 77204 USA

[3] Louisiana State Univ, Dept Mech Engn, Baton Rouge, LA 70803 USA

[4] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 15期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1801176

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ferroelectric (Pb,Sr)TiO3 (PSTO) thin films were epitaxially grown on (001) LaAlO3 (LAO) by using pulsed laser deposition. 'Microstructural characterizations with x-ray diffraction and transmission electron microscopy indicate that the as-grown films have excellent single crystalline quality and a (001)(PSTO)//(001)(LAO) and [100](PSTO)//[100](LAO) interface relationship. Dielectric property measurements reveal that the as-grow films have a very high dielectric constant value of 3100 and very large dielectric tunability of 48% at 40 V/cm at room temperature. These excellent results suggest that the highly epitaxial ferroelectric (Pb, Sr)TiO3 thin films can be developed for room-temperature tunable microwave elements in wireless communication applications. (C) 2004 American Institute of Physics.

引用

页码：3202 / 3204

页数：3

共 20 条

[1] Optimization of the tunability of barium strontium titanate films via epitaxial stresses [J].