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http://dx.doi.org/10.4191/KCERS.2007.44.1.627

Alternating - Current Electrical Properties of La0.7Sr0.3FeO3 Ceramics  

Jung, Woo-Hwan (Department of Electronics, Howon University)
Publication Information
Journal of the Korean Ceramic Society / v.44, no.11, 2007 , pp. 627-632 More about this Journal
Abstract
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 $La_{0.7}Sr_{0.3}FeO_3$.
Keywords
HOB; Hopping; QMT; Small Polaron;
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