| 학회 |
한국재료학회 |
| 학술대회 |
2018년 봄 (05/16 ~ 05/18, 삼척 쏠비치 호텔&리조트) |
| 권호 |
24권 1호 |
| 발표분야 |
G. 나노/박막 재료 분과 |
| 제목 |
Dielectric and Ferroelectric Properties of Nano-grained 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 Thin Films by Aerosol Deposition Method |
| 초록 |
pure BT is a ferroelectric material. However, Ba(Zr0.2Ti0.8)O3 (BZT) and (Ba0.7Ca0.3)TiO3 (BCT) ,which are doped with Zr and Ca respectively, show relaxor-ferroelectric behavior. 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 [0.5BZT-0.5BCT] thin films of with a thickness of 4.5㎛ at morphotropic phase boundary, were fabricated by aerosol-deposition (AD) process. The AD film prepared using the mixed BZT-BCT powders rather than single phase (0.5BZT-0.5BCT) had a dense structure with nano-size grains. XRD results showed that the AD film had a mixed phase of BZT-BCT and crystallinity of the AD film increased with annealing. When heat-treated over 700 ℃, BZT-BCT chemically reacted to form a single phase (0.5BZT-0.5BCT). As the film was annealed, a hysteresis curve showing typical ferroelectric properties was observed. The remnant polarization and saturation polarization increased to 700 ℃. The fabrication of a high-density ceramic film, the permittivity and electrical characteristics were confirmed. |
| 저자 |
윤송현1, 박춘길1, 임지호1, 이승희1, 이주승1, 류정호2, 정대용1
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| 소속 |
1인하대, 2영남대 |
| 키워드 |
<P>Dielectric; Ferroelectric Properties; Nano microstructure; Aerosol Deposition; Ba(Zr<SUB>0.2</SUB>Ti<SUB>0.8</SUB>)O<SUB>3</SUB>-0.5(Ba<SUB>0.7</SUB>Ca<SUB>0.3</SUB>)TiO<SUB>3</SUB> </P>
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| E-Mail |
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