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Title:
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Mechanism of ac conduction in nanostructured manganese zinc mixed ferrites |
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Author:
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Anantharaman, M R; Veena Gopalan, E; Malini, K A; Sagar, S; Sakthi Kumar, D; Yasuhiko, Yoshida; Al-Omari, I A
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Abstract:
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Mn1−xZnxFe2O4 nanoparticles (x = 0 to 1) were synthesized by the wet chemical
co-precipitation technique. X-ray diffraction and transmission electron microscopy and high
resolution transmission electron microscopy were effectively utilized to investigate the
different structural parameters. The ac conductivity of nanosized Mn1−xZnxFe2O4 were
investigated as a function of frequency, temperature and composition. The frequency
dependence of ac conductivity is analysed by the power law σ(ω)ac = Bωn which is typical
for charge transport by hopping or tunnelling processes. The temperature dependence of
frequency exponent n was investigated to understand the conduction mechanism in different
compositions. The conduction mechanisms are mainly based on polaron hopping conduction |
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Description:
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J. Phys. D: Appl. Phys. 42 (2009) 165005 (8pp) |
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URI:
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http://dyuthi.cusat.ac.in/purl/4397
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Date:
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2009-07-31 |