Reliability of Mutil-Layer Ceramic Capacitor and Its Conduction Mechanism under High Electric Field
The temperature-dependent DC conduction mechanism in BaTiO3-based multilayer ceramic capacitors has been discussed in this paper. In the high electric field, BaTiO3-based Multi-Layer Ceramic Capacitor (MLCC) showed different DC conduction mechanism in room-temperature, Curietemperature, and high-temperature regions. The DC conduction mechanisms at room and high temperature are Schottky effect and ionic flow, respectively. However, the mechanism at Curie temperature showed a tunnel-like current, abnormal temperature-independence DC conduction current. For the study of this abnormal phenomenon, the structural nature of insulting solids of practical importance is emphasized. Based on the relation of barrier height and phase transformation, the Curietemperature region is actually controlled by Schottky process. The DC conduction mechanism of BaTiO3-based MLCC in Curie-temperature region can compatibly explained by the change of barrier height resulting from phase transformation.
multi-layer ceramic capacitor schottky effect tunneling effect phase transformation
Yu-dong LU Yun-fei EN Ming WAN Xin WANG
Science and Technology on Reliability Physics and Application of Electronic Component Laboratory Chi College of Materials Science and Engineering South China University of Technology Guangzhou, China
国际会议
西安
英文
527-530
2011-06-17（万方平台首次上网日期，不代表论文的发表时间）