[1] [1] RAMIREZ A P,SUBRAMANIAN M A,GARDEL M,et al.Giant dielectric constant response in a copper-titanate［J］. Solid State Communications,2000,115(5):217-220.

[2] [2] ADAMS T B,SINCLAIR D C,WEST A R,et al.Giant barrier layer capacitance effects in CaCu3Ti4O12［J］. Advan ced Materials, 2002,14:1321-1323.

[4] [4] RHOUMA S,SAID S,AUTRET C,et al.Comparative studies of pure,Sr-doped,Ni-doped and co-doped CaCu3Ti4O12,ceramics:Enhancement of dielectric properties［J］.Journal of Alloys & Compounds,2017,717:121-126.

[5] [5] LI T,CHEN Z,CHANG F,et al.The effect of Eu2O3 doping on CaCu3Ti4O12 varistor properties［J］.Journal of Alloys & Compounds, 2009,481(1/2):718-722.

[6] [6] GRUBBS R K, VENTURINI E L, CLEM P G, et al. Dielectric and magnetic properties of Fe- and Nb-doped CaCu3Ti4O12［J］. Phys Rev b, 2005,72(10):1-11.

[7] [7] LI W, QIU S Y, CHEN N, et al. Enhanced dielectric response in Mg-doped CaCu3Ti4O12 ceramics［J］. Journal of Materials Science& Technology,2010,26(8):682-686.

[8] [8] THONGBAI P,JUMPATAM J,YAMWONG T,et al.Effects of Ta5+ doping on microstructure evolution, dielectric properties and electrical response in CaCu3Ti4O12 ceramics［J］.Journal of the European Ceramic Society,2012,32(10):2423-2430.

[9] [9] ADAMS T B,SINCLAIR D C,WEST A R.Decomposition reactions in CaCu3Ti4O12 ceramics［J］.American Ceramics Society, 2006,89:2933-2838.

[12] [12] CHIODELLIAO G,MASSAROTTIA V,CAPSONIA D,et al.Electric and dielectric properties of pure and doped CaCu3Ti4O12 perovskite materials［J］.Solid State Communications,2004,132:241-246.

[13] [13] CAPSONI D,BINI M,MASSAROTTI V.Role of doping and CuO segregation in improving the giant permittivity of CaCu3Ti4O12［J］. Journal of Soild State Chemistry,2004,177:4494-4500.