A novel route to lower the dielectric loss in CaCu3Ti4O12 ceramics
Lixin Feng, Xiaoming Tang, Yueyue Yan, Xuezhi Chen, Zhengkuan Jiao, Guanghan Cao
Abstract
Based upon a widely-accepted internal-barrier-layer-capacitance (IBLC) model, the dielectric loss in the giant-dielectric-constant CaCu3Ti4O12 (CCTO) material is expected to decrease as the conductivity of the CCTO grains/subgrains increases. In this letter, we report that this idea was successfully realized through the La-for-Ca substitution in the CCTO ceramics. The impedance spectroscopy analysis gives the evidence.
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