- Dy2O3를 첨가한 (Ba,Sr,Ca)TiO3 후막의 구조 및 전기적 특성 연구
- ㆍ 저자명
- 노현지,박상만,윤상은,이성갑,Noh. Hyun-Ji,Park. Sang-Man,Yun. Sang-Eun,Lee. Sung-Gap
- ㆍ 간행물명
- 전기전자재료학회논문지
- ㆍ 권/호정보
- 2007년|20권 8호|pp.680-684 (5 pages)
- ㆍ 발행정보
- 한국전기전자재료학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
In this study, we investigated the effects of structural and electrical properties of $(Ba_{0.6},;Sr_{0.3},;Ca_{0.1})TiO_3$ thick films with variation $Dy_2O_3$ contents. $(Ba_{0.6},;Sr_{0.3},;Ca_{0.1})TiO_3$ powders, prepared by the sol-gel method, were mixed organic vehicle. The BSCT thick films doped with 0.1, 0.3, 0.5, 0.7 mol% $Dy_2O_3$ were fabricated by the screen-printing techniques on the alumina substrates and the structural and dielectric properties were investigated with variation of $Dy_2O_3$ doping contents. All BSCT thick films were sintered at $1420^{circ}C$, for 2hr. In the TG-DTA analysis, the formation of the polycrystalline perovskite phase was observed at around $670 ^{circ}C$. In the XRD analysis, all BSCT thick films showed the cubic perovskite structure. The average thickness of BSCT thick films was approximately $65{mu}m$. The Curie temperature decreased with increasing $Dy_2O_3$ amount. The relative dielectric constant and dielectric loss of BSCT thick films doped with $Dy_2O_3$ 0.1 mol% were 6267 and 2.6 %, respectively.