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Erschienen in:
01.11.2013
Electrical and dielectric properties of nanocrystalline LaCrO3
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 11/2013
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Abstract
The X-ray diffraction pattern of nanocrystalline LaCrO3 synthesized by combustion method reveals the perovskite phase of the material. The synthesized material has an average crystallite size of 24 nm. The characterization techniques such as X-ray diffraction studies, scanning electron microscopy, transmission electron microscopy etc., were employed to study the average particle size, phase and composition of the material. The effects of constituent phase variation on the dielectric, resistivity and impedance properties are examined. The dielectric dispersion with frequency has been explained on the basis of an electron–hole hopping mechanism, this is responsible for conduction and polarization. From the ac conductivity study, it is confirmed that the conduction in the present material is of small polaron type. Such materials may be useful to fabricate the interconnecting materials for the solar cell, gas sensors, gas transducers, optoelectronic devices, catalyst etc.