Relationship between microstructural evolution and electric properties of B 2O 3-CaCu 3Ti 4O 12 composite ceramics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Wen-Xiang Yuan
  • Z. J. Li
  • C. D. Wang

Detail(s)

Original languageEnglish
Pages (from-to)1552-1557
Journal / PublicationJournal of Materials Science: Materials in Electronics
Volume23
Issue number8
Publication statusPublished - Aug 2012

Abstract

Calcium copper titanate (CaCu 3Ti 4O 12, CCTO) powder was mixed with boric oxide (B 2O 3) glassy phase up to 8% by weight to prepare the composite ceramics. The effects of B 2O 3 incorporation on the microstructures, electric and dielectric properties of CCTO ceramics have been systematically investigated. Adding B 2O 3 results in both the decrease of the CCTO grain size. These microstructural changes conjointly affect the dielectric constant. In addition, further B 2O 3 increase leads to its aggregation at grain boundaries. Meanwhile, the B 2O 3 addition reduces the nonlinear coefficient and influences the breakdown electric field. © Springer Science+Business Media, LLC 2012.

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