2007•Electronic Components and MaterialsRequires access
CaCu_3Ti_4O_(12) ceramics prepared by solid state reaction sinter
Tang De-ping
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Abstract
CaCu3Ti4O12 (CCTO)ceramics were prepared by solid-state reaction sinter. The sintering behavior, crystal structure and dielectric properties of CCTO ceramics were investigated together with frequency and temperature dependence of dielectric properties. The single phase dense ceramics CCTO was sintered at 1 120 ℃ for 3 h, which the shrinkage reached 22.3%. Dielectric constant obviously increase with increase of sintering temperature and is strongly sensitive to frequency. These dielectric behaviors are analyzed by impedance spectra. The CCTO ceramics are obtained with dielectric constant of 3 005 (at room temperature and 1 kHz).