Influence of Zirconium doping on microstructure and dielectric properties of CaCu3Ti4O12 synthesized by the sol–gel method.pdf

Journal of Alloys and Compounds 651 (2015) 283 e289 Contents lists available at ScienceDirect Journal of Alloys and Compounds journal homepage: http://www.elsevier .com/locate/jalcom Influence of Zirconium doping on microstructure and dielectric properties of CaCu Ti O synthesized by the solegel method 3 4 12 Li Sun a, b, *, Zhenduo Wang b, Wentao Hao a, Ensi Cao b, Yongjia Zhang b, Hua Peng b a Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, PR China b College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, PR China a r t i c l e i n f o a b s t r a c t Article history: Giant dielectric response of CaCu Ti O prepared by the solegel method was enhanced by doping of Zr 3 4 12 Received 22 June 2015 ions at the Ti site (CaCu Ti Zr O , x ¼ 0, 0.05, 0.1 and 0.2). CaCu Ti Zr O ceramics can bring an 3 4x x 12 3 3.95 0.05 12 Received in revised form 0 4 increase in the main grain size and exhibit a very high dielectric constant (ε 2 10 ) at room tem- 12 August 2015