Unusual dielectric response in cobalt doped reduced graphene oxide

Akhtar, Abu Jahid; Gupta, Abhisek; Kumar Shaw, Bikash

doi:10.1063/1.4845536

Title: Unusual dielectric response in cobalt doped reduced graphene oxide

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Abstract

Intensive research on cobalt doped reduced graphene oxide (Co-RGO) to investigate the modification in graphene magnetism and spin polarization due to presence of transition metal atom has been carried out, however, its dielectric spectroscopy, particularly, how capacitance changes with impurity levels in graphene is relatively unexplored. In the present work, dielectric spectroscopy along with magneto-dielectric effect are investigated in Co-RGO. Contrary to other materials, here permittivity increases abruptly with frequency in the low frequency region and continues to increase till 10{sup 7} Hz. This unusual behavior is explained on the basis of trap induced capacitance created due to impurity levels.

Authors:: Akhtar, Abu Jahid; Gupta, Abhisek; Kumar Shaw, Bikash

Publication Date:: Mon Dec 09 00:00:00 EST 2013

OSTI Identifier:: 22253836

Resource Type:: Journal Article

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 103; Journal Issue: 24; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; ATOMS; CAPACITANCE; COBALT; DIELECTRIC MATERIALS; DOPED MATERIALS; GRAPHENE; IMPURITIES; OXIDES; PERMITTIVITY; SPECTROSCOPY; SPIN ORIENTATION

Citation Formats


                    Akhtar, Abu Jahid, Gupta, Abhisek, Kumar Shaw, Bikash, and Saha, Shyamal K., E-mail: cnssks@iacs.res.in. Unusual dielectric response in cobalt doped reduced graphene oxide.  United States: N. p., 2013. 
        Web.  doi:10.1063/1.4845536.

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                    Akhtar, Abu Jahid, Gupta, Abhisek, Kumar Shaw, Bikash, & Saha, Shyamal K., E-mail: cnssks@iacs.res.in. Unusual dielectric response in cobalt doped reduced graphene oxide.  United States.  https://doi.org/10.1063/1.4845536

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                    Akhtar, Abu Jahid, Gupta, Abhisek, Kumar Shaw, Bikash, and Saha, Shyamal K., E-mail: cnssks@iacs.res.in. 2013.  
        "Unusual dielectric response in cobalt doped reduced graphene oxide".  United States.  https://doi.org/10.1063/1.4845536.

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@article{osti_22253836,

  title        = {Unusual dielectric response in cobalt doped reduced graphene oxide},

  author       = {Akhtar, Abu Jahid and Gupta, Abhisek and Kumar Shaw, Bikash and Saha, Shyamal K., E-mail: cnssks@iacs.res.in},

  abstractNote = {Intensive research on cobalt doped reduced graphene oxide (Co-RGO) to investigate the modification in graphene magnetism and spin polarization due to presence of transition metal atom has been carried out, however, its dielectric spectroscopy, particularly, how capacitance changes with impurity levels in graphene is relatively unexplored. In the present work, dielectric spectroscopy along with magneto-dielectric effect are investigated in Co-RGO. Contrary to other materials, here permittivity increases abruptly with frequency in the low frequency region and continues to increase till 10{sup 7} Hz. This unusual behavior is explained on the basis of trap induced capacitance created due to impurity levels.},

  doi          = {10.1063/1.4845536},

  url          = {https://www.osti.gov/biblio/22253836},
  journal      = {Applied Physics Letters},

  issn         = {0003-6951},

  number       = 24,

  volume       = 103,

  place        = {United States},

  year         = {Mon Dec 09 00:00:00 EST 2013},

  month        = {Mon Dec 09 00:00:00 EST 2013}

}

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