Effect of cesium and cerium substitution on the dielectric properties of CaCu3Ti4O12 ceramics

A novel low cost non-aqueous chemical route for giant dielectric constant CaCu3Ti4O12 ceramic

“…Traditionally, the conventional solid-state technique has been used for the synthesis of CCTO using CaCO 3 , TiO 2 and CuO [20,21]. This method, however, cannot produce highly homogeneous solid solutions in a realistic time frame because the mixtures of metal oxides are calcined at high temperature for long durations (1000e1050 C for 24e48 h) with repeated intermediate grindings [22,23].…”

High permittivity and low dielectric loss of the Ca1−xSrxCu3Ti4O12 ceramics

“…Number of attempts has been made to decease tan ı by various compositional modifications, such as TeO 2 -doped CCTO [10], ZrO 2 -doped CCTO [11], CCTO/CaTiO 3 composite [12,13], TiO 2 -rich CCTO [14], and the substitution of La for Cu in CCTO [15] have also been reported to be effective in reducing the dielectric loss and still maintaining the high dielectric constant.…”

Dielectrics Properties and Temperature Dependence of Electron Spin Resonance of Doped Molybdenum CCTO

“…Authors also report the influence of different doping CCTO solid phase. Thus, while the addition of compounds such as TeO 2 , Cerium, Cesium, and Eu 2 O 3 greatly reduce permittivity material [7][8][9], oxides such as P 2 O 5 , GeO 2 , Lu 2 O 3 and V 2 O 3 increase the dielectric constant [10][11][12][13]. When doping is carried out by partial substitution of Ca or Ti sites, we have generally a reduction of the permittivity of the material by substitution on the sites of the first one (Gd et Pr) [14,15] and an increase on the sites of the second one (Nb, Fe, Co, Ni) [16][17].…”