| 학회 |
한국재료학회 |
| 학술대회 |
2015년 봄 (05/14 ~ 05/15, 구미코) |
| 권호 |
21권 1호 |
| 발표분야 |
G. 나노/박막 재료 |
| 제목 |
Synthesis of core-shell nanoparticles with BaTiO3 core and Sr-doped shell |
| 초록 |
BaTiO3 is widely used dielectric material in multilayer ceramic capacitor (MLCC) due to its high dielectric constant. Homogeneous existence of SrTiO3 among BaTiO3 leads to broadening of dielectric permittivity peak. However, mixture of SrTiO3 and BaTiO3 may result inhomogeneous distribution between two components. The synthesis of core-shell structure of two component has been proposed as one of promising approaches to achieve homogeneous distribution of BaTiO3 and SrTiO3, resulting broadened permittivity peak. Core-shell structure of BaTiO3 core and SrTiO3 shell has been investigated with relatively large BaTiO3 particle size. Because of the advances in electronic devices require implementation of ultra-high capacity MLCC, nano-sized BaTiO3 powder below 200nm has become necessity. While nano-size BaTiO3 powder is essential for miniaturized ultra-high capacity MLCC, BaTiO3 nanoparticle should also maintain its dielectric properties to have high performance. Therefore core-shell structure of BaTiO3 core with size around 100nm and Sr-doped BaTiO3 layer are synthesized. The phase and morphology of Ba1-xSrxTiO3 at BaTiO3 core-shell structure has been investigated via X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). |
| 저자 |
왕지은1, 김도경1, 백창연1, 최창학2, 박금진2
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| 소속 |
1한국과학기술원, 2삼성전기 |
| 키워드 |
<P>barium titanate; core-shell; MLCC</P>
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| E-Mail |
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