Effect of sintering atmosphere on the dielectric properties of barium titanate based capacitors

被引：26

作者：

Halder, N ^{[1
]}

Chattopadhyay, D ^{[1
]}

Das Sharma, A ^{[1
]}

Saha, D ^{[1
]}

Sen, A ^{[1
]}

Maiti, HS ^{[1
]}

机构：

[1] Cent Glass & Ceram Res Inst, Electroceram Div, Kolkata 700032, W Bengal, India

来源：

MATERIALS RESEARCH BULLETIN | 2001年 / 36卷 / 5-6期

关键词：

oxides; electronic materials; dielectric properties; ferroelectricity; defects;

D O I：

10.1016/S0025-5408(01)00540-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It has been found that BaTiO3 based capacitor compositions containing lithium tetraborate (Aux! and bismuth oxide (flux and Curie peak suppressor) can be fired in an inert (argon) atmosphere without sacrificing densification. However, the inert atmosphere firing can lead to a dramatic increase of both the dielectric constant and dissipation faster of the samples containing bismuth oxide which can be suppressed by adding a small amount of manganese dioxide in the compositions. The temperature coefficient of capacitance of such samples shows the desirable flattened response when fired in argon atmosphere. The observations have been explained by considering the formation of defects at elevated temperatures in bismuth containing samples when fired in an inert atmosphere. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：905 / 913

页数：9

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