Enhanced electric field tunable dielectric properties of BaZrxTi1-xO3 relaxor ferroelectrics

被引：109
|
作者：
Maiti, Tanmoy [1 ]
Guo, R. [1 ]
Bhalla, A. S. [1 ]
机构：
[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 18期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2734922
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The environmental friendly lead-free perovskite BaZrxTi1-xO3 (x=0.35, 0.40, and 0.45) relaxor ceramics are developed for the tunable microwave device applications such as tunable filters, phase shifters, antennas, etc. Electric field dependence of dielectric behavior of the ceramic samples has been studied in the temperature range from 300 to 15 K for the tunable dielectric devices. The results have been analyzed in relation to tunability (%) and K factor of the tunable dielectric materials. Very high tunability (similar to 93%) as well as extremely high K factor (similar to 468) has been achieved by manipulating the Zr:Ti concentration in BaZrxTi1-xO3 ceramics. (C) 2007 American Institute of Physics.
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页数：3
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