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Enhanced dielectric responses in Mg-doped CaCu3Ti4O12.
- Source :
-
Journal of Applied Physics . Oct2008, Vol. 104 Issue 7, p074107. 4p. 4 Graphs. - Publication Year :
- 2008
-
Abstract
- We report the effects of the Mg doping on the dielectric properties of CaCu3Ti4O12 in the frequency range of 200 Hzā200 kHz and in the temperature range of 58ā473 K. It is found that the incorporations of Mg2+ result in increases in the dielectric constant by 12%ā20% and decreases in the dielectric loss by 41%ā64% (with the minimum of 0.042 for CaCu2.7Mg0.3Ti4O12) at room temperature and at 1 kHz. The x-ray photoemission spectroscopy measurements reveal that the content of Cu3+ increases with the increasing concentration of Mg2+. The enhanced dielectric response may be related to the influence of Cu3+ and/or Mg2+. In other words, Mg2+ is an effective ion to optimize the dielectric properties of CaCu3Ti4O12. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 104
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 34829151
- Full Text :
- https://doi.org/10.1063/1.2989124