| Modified Mixed Oxide 방법에 의한 PMN-PT-BT 분말 합성 및 그의 물성에 미치는 Ag의 영향 |
| 임경란, 정순용, 김창삼 |
| 한국과학기술연구원 재료연구부 |
| Preparation of PMN-PT-BT Powder by Modified Mixed Oxide Method and Effect of Ag on Dielectric Properties |
| Kyoung-Ran Lim, Soon-Yong Jeong, Chang-Sam Kim |
| Division of Materials Science and Engineering, KIST |
|
|
|
|
|
| ABSTRACT |
|
A single phase perovskite relaxor ferroelectric PMN-PT-BT was prepared by a single calcination and the modified mixed oxide process. It was accomplished by ball-milling PbO, $Nb_2O_5,;Ti(OC_3H_7)_4,;BaCO_3,;and;Mg(NO_3)_2$ instead of MgO, removing the solvent, and then followed by calcination at 900$^{circ}C$ for 2h. The specimen sintered at 1100$^{circ}C$/2h showed the sintered density of 7.83 g/$cm^3$, room temperature dielectric constant of 22000, and dielectric loss of 2.5%. Addition of 1.0 mole% (0.3 wt%) of Ag as $AgNO_3$ and followed by calcination at 550$^{circ}C$/2h lowered the sintering temperature to 900$^{circ}C$. It still showed the sintered density of 7.88 g/$cm^3$, room temperature dielectric constant of 20000 and dielectric loss of 2.4%. |
| Key words:
PMN-PT-BT, Perovskite, Single-calcination, Ag, Low-temperature-sinterable, Low dielectric loss |
|
PDF Links
Full text via DOI
Download Citation 
