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    Large enhanced dielectric permittivity in polyaniline passivated core-shell nano magnetic iron oxide by plasma polymerization

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    Author
    Joy, Lija K.; Sooraj, V.; Sajeev, U.S.; Nair, Swapna S.; Narayanan, T.N.; More... Sethulakshmi, N.; Ajayan, P.M.; Anantharaman, M.R. Less...
    Date
    2014
    Abstract
    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.
    Citation
    Joy, Lija K., Sooraj, V., Sajeev, U.S., et al.. "Large enhanced dielectric permittivity in polyaniline passivated core-shell nano magnetic iron oxide by plasma polymerization." Applied Physics Letters, 104, (2014) AIP Publishing: 121603. http://dx.doi.org/10.1063/1.4870098.
    Published Version
    http://dx.doi.org/10.1063/1.4870098
    Type
    Journal article
    Publisher
    AIP Publishing
    Citable link to this page
    https://hdl.handle.net/1911/75889
    Rights
    Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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    • Faculty Publications [5245]
    • Mechanical Engineering Publications [162]

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    Home | FAQ | Contact Us | Privacy Notice | Accessibility Statement
    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map