Sintering Effects on Dielectric Properties of Zn-Doped CaCu3Ti4O12 Ceramic Synthesized by Modified Sol-Gel Route
- Title
- Sintering Effects on Dielectric Properties of Zn-Doped CaCu3Ti4O12 Ceramic Synthesized by Modified Sol-Gel Route
- Author
- 이선영
- Keywords
- sintering; grain size; dielectric properties; perovskites; capacitors
- Issue Date
- 2013-01
- Publisher
- 대한금속·재료학회
- Citation
- Electronic Materials Letters, v. 9, NO. 1, Page. 107-113
- Abstract
- CaCu2.90Zn0.10Ti4O12 ceramic was synthesized by a novel semi-wet route and calcined at 800°C in air for 8 h. The obtained powder was divided into three parts and sintered in air at 950°C for 6 h, 8 h, and 12 h,separately. XRD results confirmed the single phase formation of all the sintered samples with similar cubic structure of CaCu3Ti4O12 (CCTO). Scanning electron micrographs of the CaCu2.9Zn0.1Ti4O12 ceramic sintered for 6 h shows bimodal grain size distribution. Increasing the sintering time significantly promotes the grain growth and microstructural densification. The sintering duration was found to have tremendous influence on microstructure and dielectric properties of CaCu2.90Zn0.10Ti4O12 ceramic. The CaCu2.9Zn0.1Ti4O12 ceramic sintered for 12 h exhibited high dielectric constant εr ~ 5971 at 1 kHz and room temperature. It is found that εr is independent at high frequency and weakly dependent on temperature.
- URI
- https://link.springer.com/article/10.1007%2Fs13391-012-2095-xhttps://repository.hanyang.ac.kr/handle/20.500.11754/181516
- ISSN
- 1738-8090;2093-6788
- DOI
- 10.1007/s13391-012-2095-x
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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