| 학회 |
한국재료학회 |
| 학술대회 |
2019년 봄 (05/15 ~ 05/17, 평창 알펜시아 리조트) |
| 권호 |
25권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Dielectric Properties of BaTiO3-NaNbO3– (Bi0.5,Mg0.5)TiO3 thin films deposited via sol-gel method |
| 초록 |
Recently great interests of hybrid cars or electronic cars lead to unlimited research about pulsed power system. The capacitors which are one of the most important components composing pulsed power system exhibit high energy density and thermal stability in wide range of temperature. Relaxor ferroelectric ceramics are promising materials to satisfying these requirements for pulsed power capacitors. In this study, lead-free relaxor ferroelectrics, BaTiO3-NaNbO3-Bi(Mg0.5,Ti0.5)O3 (BT-NN-BMT) ternary system is introduced. The BT which is popular lead-free ferroelectrics has phase transitions at 0OC and 120OC, which causes dramatic change of dielectric permittivity. For addition of NN and BMT its phase transition temperature is shifted to higher or lower temperature, and relaxation behavior was observed that can exhibit stable dielectric properties over a wide temperature range. The thin films of this ternary system fabricated via spin coating method. The microstructure observed by FeSEM and crystal structure and phase formation figured out via XRD. The dielectric properties such as dielectric permittivity, loss, P-E loop and breakdown strength measured in the wide frequency range. |
| 저자 |
고유민1, Sonia Simon2, 송태영1, 장현배1, 권도균1
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| 소속 |
1한국항공대, 2IUT Saint Brieuc |
| 키워드 |
lead-free; dielectrics; relaxor; ferroelectrics
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| E-Mail |
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