| 학회 |
한국재료학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 광주 김대중컨벤션센터) |
| 권호 |
27권 1호 |
| 발표분야 |
A. 전자/반도체 재료 분과 |
| 제목 |
Enhanced energy storage property of Bi0.5Na0.5ZrxTi(1-x)O3 through improvement structural stability in MPB areas and AD method |
| 초록 |
The development of the electronics industry has led to an increasing demand for ceramic-based dielectric capacitors with high energy storage density. The most commonly used lead zirconate titanate (PZT) is known to exhibit stable and excellent dielectric characteristics by coexisting in morphotropic phase boundary (MPB) with lead zirconate (rhombohedral) and lead titanate (tetragonal). Although PZT is well known for its good performance, lead-free materials have been replaced with PZT due to environmental problems with Pb. Bi0.5Na0.5TiO3(BNT) is a typical lead-free series of ferroelectric with high saturation polarization but it has a disadvantage that is difficult to maintain stoichiometry because of structural instability. In order to solve this issue, the improvement of stability and dielectric properties in the MPB region have been studied through a mixture of BNT(rhomboheral) and Bi0.5Na0.5ZrO3 (BNZ; orthorhombic) such as PZT. In this work, the thick film of Bi0.5Na0.5ZrxTi(1-x)O3 (BNZT; x=0.4, 0.5, 0.6) was fabricated through the aerosol-deposition(AD) method and the dielectric constant and energy storage performance were measured. AD method is a physical deposition method based on particle collisions that enables ceramic coating at room temperature. AD process is enabled the enhancement of energy storage capability by forming a dense film with nano-grain. This study suggests that AD method could be applied to various applications such as electrical vehicles and mobile devices. |
| 저자 |
김민규, 지성엽, 김승욱, 이화평, 임지호, 정대용
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| 소속 |
인하대 |
| 키워드 |
MPB; Bi<SUB>0.5</SUB>Na<SUB>0.5</SUB>Zr<SUB>x</SUB>Ti<SUB>1-x</SUB>O<SUB>3</SUB>; Lead-free ferroelectrics; Aerosol deposition; Energy storage property
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| E-Mail |
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