Magnetic and electric behavior of NiFe204-PVDF nanocomposites

Sen, S and Panda, A K and Prasad, K (2012) Magnetic and electric behavior of NiFe204-PVDF nanocomposites. Material Science-Poland, 30 . pp. 415-425.

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NiFe2O4-PVDF composites in different ratios (10 %, 30 % and 50 %) were prepared in two steps. Firstly, fine nanosized NiFe2O4 powder was synthesized using the pre-cursor solution method. Then the composites were made by hot-press technique. The presence of both the phases (ceramic and polymer) was confirmed by XRD micrographs. The average particle size of the composites varied from 18-23 nm. SEM micrographs showed that the ferrite particles were embedded in the polymer matrix. The saturation magne-tization and the remanence showed an increasing trend with the increase in ferrite content while the coercivity remained almost constant. Impedance plot showed the presence of a single semicircle, which indicates the presence of bulk effect. The composites exhibited non-Debye relaxation. The bulk conductivity followed the Arrhenius type of behavior. The conduction mechanism was explained by the Vervey-de-Boer mechanism.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:nano-composites; magnetization; impedance; conduction; Vervey-de-Boer mechanism
Divisions:Material Science and Technology
ID Code:6636
Deposited By:Dr. A K Sahu
Deposited On:04 Jun 2013 17:15
Last Modified:04 Jun 2013 17:15
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