| La0.7Sr0.3FeO3 세라믹스의 교류 전도특성 |
| 정우환 |
| 호원대학교 전자공학과 |
| Alternating - Current Electrical Properties of La0.7Sr0.3FeO3 Ceramics |
| Woo-Hwan Jung |
| Department of Electronics, Howon University |
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| ABSTRACT |
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We have studied the ac conductivity of insulating $La_{0.7}Sr_{0.3}FeO_3$ in the frequency range 20 Hz-l MHz and in the temperature range 80-300 K. We have analyzed experimental results in the frame works of the quantum-mechanical tunneling mechanism (QMT) and the hopping of barrier mechanism (HOB). We observed that small polaron QMT model is the most suitable mechanism for the low temperature ac conductivity of $La_{0.7}Sr_{0.3}FeO_3$. |
| Key words:
HOB, Hopping, QMT, Small Polaron |
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