0.96K0.5Na0.5NbO3-0.04SrTiO3 세라믹스의 상전이와 압전 특성에 대한 Li2CO3 도핑 효과
- Alternative Title
- Effect of Li2CO3 Doping on Phase Transition and Piezoelectric Properties of 0.96K0.5Na0.5NbO3-0.04SrTiO3 Ceramics
- Abstract
- It was reported that a tetragonal phase can be stabilized with maintaining good piezoelectric properties when Na0.5K0.5NbO3 (KNN) is modified with 0.06 mol SrTiO3. However, such a high amount of SrTiO3 leads not only to poor sinterability but low Curie temperature (TC). To maintain high TC with good piezoelectric properties in KNN-based lead-free piezoelectric ceramics, this study investigates the effect of Li-doping on the dielectric and piezoelectric properties of 0.96Na0.5K0.5NbO3–0.04SrTiO3 (KNN-4ST) ceramics. As a result, the orthorhombic-tetragonal phase transition was observed at 2 mol% Li2CO3 modified KNN-4ST ceramics, whose TC, d33 and kp values are 328℃, 165pC/N and 0.33, respectively.
- Author(s)
- 박재영; 즈엉 짱 안; 이상섭; 안창원; 김병우; 한형수; 이재신
- Issued Date
- 2023
- Type
- Article
- Keyword
- Lead-free; Piezoelectric; Tetragonal; Li2CO3
- DOI
- 10.4313/JKEM.2023.36.5.12
- URI
- https://oak.ulsan.ac.kr/handle/2021.oak/16114
- Publisher
- 전기전자재료학회논문지
- Language
- 한국어
- ISSN
- 1226-7945
- Citation Volume
- 36
- Citation Number
- 5
- Citation Start Page
- 513
- Citation End Page
- 519
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- 공개 및 라이선스
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