Dielectric tunability of BST:MgO composites prepared by using nano particles

被引：9

作者：

Agrawal, S ^{[1
]}

Guo, R

Agrawal, DK

Bhalla, AS

Neurgaonkar, RR

Murray, CB

机构：

[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[2] Rockwell Sci Co, Thousand Oaks, CA 91360 USA

[3] IBM Corp, Res Ctr, Yorktown Hts, NY 10598 USA

来源：

FERROELECTRICS LETTERS SECTION | 2004年 / 31卷 / 5-6期

关键词：

nano particle size; BST; BST : MgO; composites; field dependence; tunability;

D O I：

10.1080/07315170490901472

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The dielectric properties of ferroelectric Ba0.5Sr0.5TiO3 and non-ferroelectric MgO composites synthesized by using nano particles are investigated for tunable microwave applications. Dielectric properties are studied in the temperature range of -250degreesC to 100degreesC, with and without an electrical field. The dielectric tunability is similar to50% for BST:MgO composites under the field of 80 KV/cm. at around the Curie peak. The use of nano particle sizes of materials considerably reduces dielectric losses and shows comparatively high K-factor values in the resulted composites. The ferroelectric phase is well connected and thus enhances the overall dielectric properties of the composites.

引用

页码：149 / 156

页数：8

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