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J. Korean Ceram. Soc. > Volume 44(11); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(11): 627.
doi: https://doi.org/10.4191/kcers.2007.44.1.627
La0.7Sr0.3FeO3 세라믹스의 교류 전도특성
호원대학교 전자공학과
Alternating - Current Electrical Properties of La0.7Sr0.3FeO3 Ceramics
Woo-Hwan Jung
Department of Electronics, Howon University
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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