Abstract
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.
| Translated title of the contribution | Coordinating Control of the PTC Effect on BaTiO 3 Based Ceramics by Grain and Grain Boundary |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 2417-2421 |
| Number of pages | 5 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 47 |
| Issue number | 8 |
| State | Published - 1 Aug 2018 |