| 학회 |
한국재료학회 |
| 학술대회 |
2008년 봄 (05/22 ~ 05/23, 상록리조트) |
| 권호 |
14권 1호 |
| 발표분야 |
전자재료 |
| 제목 |
Dielectric and Piezoelectric Properties of Li-doped Lead-free 0.79(Na0.5Bi0.5)TiO3 - 0.14(K0.5Bi0.5)TiO3 - 0.07BaTiO3 Ceramics |
| 초록 |
The crystalline structures and surface morphologies of lead-free 0.79(Na0.5Bi0.5)TiO3-0.14[(K0.5-xLix)Bi0.5]TiO3-0.07BaTiO3 (x = 0.1, 0.2, 0.25, 0.3, 0.4) ceramics prepared by conventional process for different lithium substitutions are investigated by X-ray diffraction method (XRD) and scanning electron microscopy (SEM). Dielectric and piezoelectric measurements have been performed. With the increasing of lithium substitution, the Curie temperature of BNT-BKLT-BT ceramics increases, but the maximum value of the dielectric constant decreases. And a relatively larger remnant polarization of 35.74 μC/cm2 has been found in the x = 0.4 sample. An optimized value of d33 (157 pC/N) has been obtained in the x = 0.3 sample. |
| 저자 |
L. Wang1, S. C. Lee2, J. H. Cho1, Y. S. Sung2, M. H. Kim1, T. K. Song2
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| 소속 |
1Changwon National Univ., 2School of Nano & Advanced Material Engineering |
| 키워드 |
Perovskite structure; Curie temperature; Piezoelectric; Dielectric
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| E-Mail |
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