期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 42, 期 16, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/42/16/165005
关键词
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资金
- Cochin University of Science and Technology for the Research
- University Grants Commission, Government of India
- CSIR
- Department of Collegiate Education, Government of Kerala
- Sultan Qaboos University [IG-SCI-PHYS-07-05]
- AICTE, Government of India [8023/RID/RPS-73/2004-05]
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 sigma(omega)(ac) = B omega(n) 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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