| 학회 |
한국재료학회 |
| 학술대회 |
2009년 봄 (05/21 ~ 05/22, 무주리조트) |
| 권호 |
15권 1호 |
| 발표분야 |
전자재료 |
| 제목 |
비납계 (1-x)(Bi0.5K0.5)TiO3-xBiFeO3 세라믹의 유전 및 압전 특성 |
| 초록 |
Dielectric and piezoelectric properties of Lead-free (1-x)(Bi0.5K0.5)TiO3–xBiFeO3 ceramics prepared by a conventional solid state reaction method were investigated in the range of x = 0~10 mol%. Piezoelectric coefficient was increased from 31 pC/N at x = 0 mol% to 64 pC/N at x = 6 mol% then decreased with increasing x. Electromechanical coupling factor (Kp) was increased up to 0.18 at x = 10 mol%. On the other hand, mechanical quality factor (Qm) was decreased. Grain size was not much changed with various x and a single perovskite with tetragonal symmetry was maintained at all compositions forming a solid solution between (Bi0.5K0.5)TiO3 and BiFeO3. Depolarization temperature (Td) was gradually decreased with increasing x from 302 ℃ at x = 0 to 245 ℃ at x = 10 mol%. |
| 저자 |
김정민, 성연수, 송태권, 김명호
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| 소속 |
창원대 |
| 키워드 |
Lead-free; Bismuth potassium titanate; Bismuth ferrite;
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| E-Mail |
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