| 구형의 PMN-PT 분말 제조 방법 |
| 임경란, 정순용, 김창삼 |
| 한국과학기술연구원 재료연구부 |
| Preparation Method of Spherical 0.9PMN-0.1PT Powder |
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| ABSTRACT |
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Preparation of spherical single-perovskite phase PMN-PT powder was tried by surface modification of the precursor powder with magnesia sol. The ball-milled mixed powder was heat treated at 550$^{C}$/l h to remove any volatiles. The calcined powder was treated with the magnesia sol of 0.3-1.0 wt% and followed by calcination at 800$^{C}$/l h to give rise to single phase perovskite PMN-PT powders. The powder with a binary size of <0.3 ㎛ and -2 ㎛ was obtained for MgO(0.3), but the spherical, agglomerate-free powder of 0.5-0.8 ㎛ was obtained for MgO(0.6) as well as for MgO(1.0). |
| Key words:
PMN-PT Magnesia sol, spherical Powder, Surface-modification, Single phase perovskite |
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