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Electrical, Dielectrical and Magnetic Properties of Zr-Mn Doped Nano-Ferrites

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Abstract:

We measured the dc electrical resistivity as a function of temperature and dielectric parameters in the frequency range 100 Hz to 3 MHz of nanosized Zr-Mn spinel ferrites with nominal composition CoFe2-2xZrxMnxO4 (0.1 x 0.4). The dc electrical resistivity decreased with the rise in temperature for all the samples, showing a semiconductor like behavior. From the dc electrical resistivity the activation energy and drift mobility are determined. Both the drift mobility and activation energy increase with a rise in x. The dielectric constant, dielectric (losses) and ac electrical resistivity as a function of frequency are also reported. The low field ac magnetic susceptibility measurement showed that the ferrimagentic transition temperature is in the range of 4395 K to 6585 K.

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Advanced Materials XII View Preview

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Periodical:

Key Engineering Materials (Volumes 510-511)

Pages:

301-306

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.510-511.301

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Online since:

May 2012

Authors:

K. Khan, Ashari Maqsood

Keywords:

Dielectric Permittivity, Magnetic Susceptibility, Nanoferrites

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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