We reported the dielectric properties of CaCu3Ti4O12 in the temperature range from room temperature to 800℃ and the frequency range from 20 Hz to 10 MHz.Apart from the widely reported dielectric anomaly occurring aro...We reported the dielectric properties of CaCu3Ti4O12 in the temperature range from room temperature to 800℃ and the frequency range from 20 Hz to 10 MHz.Apart from the widely reported dielectric anomaly occurring around 200℃,three additional dielectric anomalies were found.The new anomalies are very sensitive to electrode sintering conditions and annealing atmospheres,indicating that they are dependent not only on the electrode-sample contact but also on oxygen vacancies.展开更多
基金supported by the National Natural Science Foundation of China(11074001)
文摘We reported the dielectric properties of CaCu3Ti4O12 in the temperature range from room temperature to 800℃ and the frequency range from 20 Hz to 10 MHz.Apart from the widely reported dielectric anomaly occurring around 200℃,three additional dielectric anomalies were found.The new anomalies are very sensitive to electrode sintering conditions and annealing atmospheres,indicating that they are dependent not only on the electrode-sample contact but also on oxygen vacancies.