Degradation mechanism of dielectric loss in barium niobate under a reducing atmosphere

Dong Wan Kim, Byung Kook Kim, Hae June Je, Jae Gwan Park, Jeong Ryeol Kim, Kug Sun Hong

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We developed multilayer ceramic capacitors (MLCCs) of the type negative-positive zero (NPO) cofired with Cu inner electrodes using novel low-loss barium niobates. The excellent dielectric properties of ceramics and compatibility between electrodes and dielectrics under a reducing atmosphere led to low loss character in the Cu-MLCCs, even in the high-frequency single-layer capacitors. We also examine the atmospheric dependence on dielectric loss of barium niobates. The origin of degradation in dielectric loss under a highly reducing atmosphere is explained by the association of two loss mechanisms: the oxygen vacancies in NbO6 octahedra and the subsequent formation of a reduced second phase: Ba3Nb 4+Nb45+O15.

Original languageEnglish
Pages (from-to)3302-3304
Number of pages3
JournalJournal of the American Ceramic Society
Issue number10
Publication statusPublished - 2006 Oct
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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