Structure and dielectric properties of (Gd0.4Sm 0.5Yb0.1)2(Zr1-xCex) 2O7 ceramics

Ling Liu*, Qiang Xu, Fuchi Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Complex rare-earth zirconates (Gd0.4Sm0.5Yb 0.1)2(Zr1-xCex)2O 7 (x=0, 0.3, 0.4) powders were synthesized by co-precipitation method. XRD and SEM results revealed that the complex rare-earth zirconates with single pyrochlore structure were prepared and no other phases existed among the grains. The dielectric properties of these compounds were investigated at low and microwave frequencies. It was found that they have intermediate dielectric constants and low dielectric loss in the whole frequency region, and they show the dielectric permittivity with weak frequency dependence. Substituting Zr 4+by Ce4+ leaded to smaller permittivity. Meanwhile, the dielectric contant values increase with increasing in the r(A 3+)/r(B4+)value in the pyrochlore-type phase region, which can be explained by the increase in the degree of ordering of oxygen vacancy. This new series of pyrochlore type oxides would be potential candidates for electronic ceramic applications and microwave frequency components.

Original languageEnglish
Title of host publicationChinese Ceramics Communications
Pages394-397
Number of pages4
Edition1
DOIs
Publication statusPublished - 2010
Event6th China International Conference on High-Performance Ceramics, CICC-6 - Harbin, China
Duration: 16 Aug 200919 Aug 2009

Publication series

NameAdvanced Materials Research
Number1
Volume105-106
ISSN (Print)1022-6680

Conference

Conference6th China International Conference on High-Performance Ceramics, CICC-6
Country/TerritoryChina
CityHarbin
Period16/08/0919/08/09

Keywords

  • Complex rare-earth zirconates
  • Dielectric properties
  • Pyrochlores

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Liu, L., Xu, Q., & Wang, F. (2010). Structure and dielectric properties of (Gd0.4Sm 0.5Yb0.1)2(Zr1-xCex) 2O7 ceramics. In Chinese Ceramics Communications (1 ed., pp. 394-397). (Advanced Materials Research; Vol. 105-106, No. 1). https://doi.org/10.4028/www.scientific.net/AMR.105-106.394