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Electrical properties of La0.67Sr0.16Ca0.17MnO3 perovskite

Author name : Zaineb . . Mohamed
Publication Date : 2016-02-05
Journal Name : Phase Transitions

Abstract

La0.67Sr0.16Ca0.17MnO3 perovskite was prepared by the solid-state reaction technique. Preliminary room-temperature structural studies confirm the formation of the sample in the rhombohedral structure. The electrical response was studied using the impedance spectroscopy technique over a broad frequency range (250 Hz 3 MHz). The results indicate that the electrical properties of the material are strongly dependent on temperature and frequency. Impedance spectrum analysis shows that the material can be described as a grain and grain boundary medium and permits to estimate the grain boundary contribution. Electronic conduction is found to be dominated by a thermally activated hopping of small polaron at high temperatures.

Keywords

magnetic materials- electrical properties-impedance spectroscopy

Publication Link

https://doi.org/10.1080/01411594.2015.1120872

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