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Preparation and Study of the Dielectric Properties of (CoFe2O4-PVA) Composite Film | ||
| Diyala Journal For Pure Science | ||
| Article 1, Volume 13, Issue 4, 2017, Pages 73-82 | ||
| Authors | ||
| Tahseen H.Mubarak; Sabah M.Ail; Omar W.Ahmed | ||
| Abstract | ||
| The composite films prepared from weight fraction (0, 1, 3, 5 wt%) of cobalt ferrite powder and polymer polyvinyl alcohol (PVA) by the casting method. The cobalt ferrite powder were synthesized by sol-gel auto combustion as a chemical methods, sintered at (600oC) for 4 hours. The X-ray diffraction (XRD) pattern of powder showed single phase spinel structure. Optical microscope examination for composite films showed the homogeneity and have been studied dielectric properties (Dielectric constant (〖 ε〗_r^Ꞌ), Loss facter (ε_(r )^ꞋꞋ)) in rang (50Hz-3MHz).The value of (〖 ε〗_r^Ꞌ) and (ε_(r )^ꞋꞋ) decrease with increasing frequency in the rang (50Hz-3MHz). | ||
| Keywords | ||
| CoFe; PVA; Cobalt Ferrite; Dielectric properties | ||
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