Large enhanced dielectric permittivity in polyaniline passivated core-shell nano magnetic iron oxide by plasma polymerization
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Large enhanced dielectric permittivity in polyaniline passivated core-shell
nano magnetic iron oxide by plasma polymerization
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| Creator |
Joy, L.K.
Sooraj, V. Sajeev, U.S. Swapna, S.Nair Narayanan, T.N. Sethulakshmi, N. Ajayan, P.M. Anantharaman, M.R. |
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| Subject |
Functional Materials
Nanotechnology |
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| Description |
Commercial samples of Magnetite with size ranging from 25–30nm were coated with polyaniline by
using radio frequency plasma polymerization to achieve a core shell structure of magnetic nanoparticle
(core)–Polyaniline (shell). High resolution transmission electron microscopy images confirm the core
shell architecture of polyaniline coated iron oxide. The dielectric properties of the material were
studied before and after plasma treatment. The polymer coated magnetite particles exhibited a large
dielectric permittivity with respect to uncoated samples. The dielectric behavior was modeled using a
Maxwell–Wagner capacitor model. A plausible mechanism for the enhancement of dielectric
permittivity is proposed
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| Publisher |
American Institute of Physics
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| Date |
2014
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/3144/1/052-2014.pdf
Joy, L.K. and Sooraj, V. and Sajeev, U.S. and Swapna, S.Nair and Narayanan, T.N. and Sethulakshmi, N. and Ajayan, P.M. and Anantharaman, M.R. (2014) Large enhanced dielectric permittivity in polyaniline passivated core-shell nano magnetic iron oxide by plasma polymerization. Applied Physics Letters, 104. pp. 121603-121611. ISSN 0003-6951 |
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| Relation |
http://scitation.aip.org/content/aip/journal/apl/104/12?ver=pdfcov
http://cecri.csircentral.net/3144/ |
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