Journal of Inorganic Materials

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Composite Multilayer Ceramic Capacitors with X7R Characteristics

CAI Hong; GUI Zhi-Lun; LI Long-Tu   

  1. State Key Lab. of New Ceramics and Fine Processing; Department of Materials Science & Engineering; Tsinghua University; Beijing 100084; China
  • Received:1999-12-09 Revised:2000-01-19 Published:2000-12-20 Online:2000-12-20

Abstract: The low-sintering composite multilayer ceramic capacitors (CMLCCs) having K-value higher than 7200 with X7R characteristics (-55-+125℃, ±15%) were successfully developed. The CMLCCs incorporate four PMN-PNN-PT or PMN-PT based ceramics with different Curie temperature as the principal components. The green tapes are stacked according to a certain order and cofired. The CMLCCs have good microstructures. The research results show that it is feasible to produce chip components with high performance by cofiring multi-phases materials.

Key words: composite multilayer ceramic capacitors, CMLCCs, PMN-PNN-PT, PMN-PT, cofired

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