Effect of inner electrode on reliability of (Zn,Mg)TiO 3-based multilayer ceramic capacitor

Wen His Lee, Chi Yi Su, Ying Chieh Lee, Jackey Yang, Tong Yang, Shih PinLin

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this study, different proportions of silver-palladium alloy acting as the inner electrode were adopted to a (Zn,Mg)TiO 3-based multilayer ceramic capacitor (MLCC) sintered at 925°C for 2 h to evaluate the effect of the inner electrode on reliability. The main results show that the lifetime is inversely proportional to Ag content in the Pd/Ag inner electrode. Ag +1 diffusion into the (Zn,Mg)TiO 3-based MLCC during cofiring at 925°C for 2 h and Ag +1 migration at 140°C against 200 V are both responsible for the short lifetime of the (Zn,Mg)TiO 3-based MLCC, particularly the latter factor. A (Zn,Mg)TiO 3-based MLCC with high Ag content in the inner electrode Ag/Pd = 99/01 exhibits the shortest lifetime (13 h), and the effect of Ag +1 migration is markedly enhanced when the activation energy of the (Zn,Mg)TiO 3 dielectric is greatly lowered due to the excessive formation of oxygen vacancies and the semiconducting Zn 2TiO 4 phase when Ag + substitutes for Zn +2 during co-firing.

Original languageEnglish
Pages (from-to)5859-5864
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume45
Issue number7
DOIs
Publication statusPublished - 2006 Jul 7

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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