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.
|Uncontrolled Keywords:||nano-composites; magnetization; impedance; conduction; Vervey-de-Boer mechanism|
|Divisions:||Material Science and Technology|
|Deposited By:||Dr. A K Sahu|
|Deposited On:||04 Jun 2013 17:15|
|Last Modified:||04 Jun 2013 17:15|
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