Affordable Access

Access to the full text

Influence of Bi2O3 addition on structure and dielectric properties of Ag(Nb0.8Ta0.2)O3 ceramics

Authors
  • Cao, Lifeng
  • Li, Lingxia
  • Zhang, Ping
  • Wang, Hongru
Type
Published Article
Journal
Materials Science-Poland
Publisher
Versita
Publication Date
Mar 01, 2011
Volume
29
Issue
1
Pages
1–8
Identifiers
DOI: 10.2478/s13536-011-0002-z
Source
De Gruyter
Keywords
License
Green

Abstract

The structure and dielectric properties of perovskite Ag(Nb0.8Ta0.2)O3 ceramics were explored. A small amount of Bi2O3 was used to modify the dielectric properties of the ceramics. The addition of Bi2O3 led the ceramics to a high densification and optimal dielectric properties. With the addition of 4.5 wt% Bi2O3, the permittivity of Ag(Nb0.8Ta0.2)O3 ceramics increased from 470 to 733, the dielectric loss decreased from 62×10−4 to 6.7×10−4, and the temperature coefficient of capacitance, TCC, decreased from 2004 ppm/°C to −50 ppm/°C. The high permittivity obtained was due to the high densification and weak Ta-O or Nb-O bond strength in the oxygen octahedron that results from the addition of Bi2O3.

Report this publication

Statistics

Seen <100 times