摘要
Y and Mn co-doped BaTiO 3 ceramics were prepared by the conventional solid state reaction. The phases, microstructures and composition of the prepared samples were characterized by X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer, respectively, and the electrical parameters were measured. Results show that the room temperature resistance of BaTiO 3 could be effectively decreased by Y doping. However, the excessive Y would segregate at the grain boundary, which weakens the positive temperature coefficient (PTC) effect of BaTiO 3 ceramic, due to the interaction with Mn at the grain boundary. Through the coordinating behavior of grain and grain boundary, the PTC effect of BaTiO 3 ceramic could be efficiently regulated.
投稿的翻译标题 | Coordinating Control of the PTC Effect on BaTiO 3 Based Ceramics by Grain and Grain Boundary |
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源语言 | 繁体中文 |
页(从-至) | 2417-2421 |
页数 | 5 |
期刊 | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
卷 | 47 |
期 | 8 |
出版状态 | 已出版 - 1 8月 2018 |
关键词
- Coordinating control
- Doping
- PTC effect
- Thermistor