Abstract
We reported the dielectric properties of CaCu3Ti4O12 in the temperature range from room temperature to 800°C and the frequency range from 20 Hz to 10 MHz. Apart from the widely reported dielectric anomaly occurring around 200°C, three additional dielectric anomalies were found. The new anomalies are very sensitive to electrode sintering conditions and annealing atmospheres, indicating that they are dependent not only on the electrode-sample contact but also on oxygen vacancies.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Subramanian M A, Li D, Duan N, et al. High dielectric constant in ACu3Ti4O12 and ACu3Ti3FeO12 phases. J Solid State Chem, 2000, 151: 323–325
Ramirez A P, Subramanian M A, Gardel M, et al. Giant dielectric constant response in a copper-titanate. Solid State Commun, 2000, 115: 217–220
Homes C C, Vogt T, Shapiro S M, et al. Optical response of high-dielectric-constant perovskite-related oxide. Science, 2001, 293: 673–676
Ke S, Huang H, Fan H. Relaxor behavior in CaCu3Ti4O12 ceramics. Appl Phys Lett, 2006, 89: 182904
Ni L, Chen X M. Dielectric relaxations and formation mechanism of giant dielectric constant step in CaCu3Ti4O12 ceramics. Appl Phys Lett, 2007, 91: 122905
Li M, Sinclair D C, West A R. Extrinsic origins of the apparent relaxorlike behavior in CaCu3Ti4O12 ceramics at high temperatures: A cautionary tale. J Appl Phys, 2011, 109: 084106
Onadera A, Takesada M, Kawatani K, et al. Dielectric properties and phase transition in CaCu3Ti4O12 at high temperatures. Jpn J Appl Phys, 2008, 47: 7753–7756
Wang C C, Dou S X. Pseudo-relaxor behavior induced by Maxwell-Wagner relaxation. Solid State Commun, 2009, 149: 2017–2020
Ang C, Yu Z, Cross L E. Oxygen-vacancy-related low-frequency dielectric relaxation and electrical conduction in Bi:SrTiO3. Phys Rev B, 2000, 62: 228–236
Waser R, Baiatu T, Härdtl K H. Dc electrical degradation of peroskite-type titanates: I Ceramics. J Am Ceram Soc, 1990, 73: 1645–1653
Kang B S, Choi S K, Park C H. Diffuse dielectric anomaly in perovskite-type ferroelectric oxides in the temperature range of 400–700°C. J Appl Phys, 2003, 94: 1904–1911
Shulman H S, Dragan D, Setter N. Niobium doping and dielectric anomalies in bbbismuth titanate. J Am Ceram Soc, 2000, 83: 528–532
Li D, Wang X P, Fang Q F, et al. Phase transition associated with the variation of oxygen vacancy/ion distribution in the oxide-ion conductor La2Mo2−x WxO9. Phys Stat Sol (a), 2007, 204: 2270–2278
Wang X P, Li D, Fang Q F, et al. Phase transition process in oxide-ion conductor β-La2Mo2−x WxO9 assessed by internal friction method. Appl Phys Lett, 2006, 89: 021904
Author information
Authors and Affiliations
Corresponding author
Additional information
This article is published with open access at Springerlink.com
Rights and permissions
This article is published under an open access license. Please check the 'Copyright Information' section either on this page or in the PDF for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
About this article
Cite this article
Zhang, M., Xu, K., Wang, G. et al. Dielectric anomalies in CaCu3Ti4O12 at high temperatures. Chin. Sci. Bull. 58, 713–716 (2013). https://doi.org/10.1007/s11434-012-5645-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-012-5645-6