Characterization, electrical and magnetic properties of PVA films filled with FeCl3-MnCl2 mixed fillers

Polyvinyl alcohol (PVA) films filled with different filling levels (FLs) of XFeCL3(15-X)MnCl2 were studied. The DSC thermograms exhibited an increase in the melting temperature with filling, indicating better thermal stability of the filled polymer of interesting industrial applications. The amorpho...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2008-06, Vol.320 (11), p.1739-1746
Main Authors: EL-KHODARY, A, ORABY, A. H, ABDELNABY, M. M
Format: Article
Language:English
Subjects:
Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary:Polyvinyl alcohol (PVA) films filled with different filling levels (FLs) of XFeCL3(15-X)MnCl2 were studied. The DSC thermograms exhibited an increase in the melting temperature with filling, indicating better thermal stability of the filled polymer of interesting industrial applications. The amorphous feature of the filled polymer was depicted using XRD scans. Vibrational studies displayed significant structural deformations. The FL dependence of certain IR absorption peaks was discussed. The dc electrical conduction mechanism was interpreted on the basis of the modified interpolaron hopping model. The present results of the dc magnetic susceptibility (chi) suggested the temperature dependence of Curie-Weiss behavior characterized by localized magnetic moments. The effective paramagnetic moment (mueff) was estimated; its dependence on the FL exhibited a non-linear character. The electron spin resonance (ESR) study revealed unresolved broad distorted signals characterized by the hyperfine structure. The ESR parameters were evaluated. A correlation between the above-mentioned studies was discussed to relate the structural, electrical and magnetic properties of the filled PVA polymer.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2008.01.030