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Title: Frequency dependent dielectric behaviour of cadmium and chromium co-substituted nickel ferrite
Authors: Trivedi, U N
Chhantbar, M C
Modi, K B
Joshi, H H
Keywords: Ferrites;Dielectric properties;Polarization;Dipole-dipole interactions
Issue Date: Sep-2005
Publisher: CSIR
IPC Code: G01R27/26
Abstract: The frequency dependent dielectric properties of Ni1-xCdxCrxFe2-xO4 (x = 0.0, 0.3, 0.5, 0.7 and 1.0) spinel ferrite system are studied by measuring dielectric constant (ε'), dielectric loss (D) and conductivity (σa.c) at 300 K in the frequency range 100 Hz-2 MHz. The highest value of σa.c and ε' is observed for x = 0.3 composition. The values ε' and σa.c decrease with increase in frequency for all the compositions, exhibiting normal ferrimagnetic behaviour and are attributed to Maxwell-Wagner type interfacial polarization. The observed broadening of relaxation peak with content in dielectric loss versus frequency curve is due to the strengthening of dipole-dipole interactions.
Page(s): 688-690
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.43(09) [September 2005]

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