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Defect induced magnetic interactions in highly oriented pyrolytic graphite (HOPG): a local investigation using TDPAD method

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Abstract

We performed microscopic studies of the magnetic interaction in HOPG by measuring the hyperfine field of 19F using the time differential perturbed angular distribution (TDPAD) technique. The results show two hyperfine fields (Bhf) components: one varying strongly with temperature and saturating around 5 kG, while the other showing a maximum of 0.85 kG. The temperature dependence of Bhf does not show any signature of ferromagnetic ordering, but is reminiscent of enhanced paramagnetism.

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Authors and Affiliations

  1. Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai, 400005, India

    S. N. Mishra, S. K. Mohanta & S. M. Davane

  2. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur, 721302, India

    S. K. Mohanta & S. K. Srivastava

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  1. S. N. Mishra
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  2. S. K. Mohanta
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  3. S. M. Davane
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  4. S. K. Srivastava
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Correspondence to S. N. Mishra.

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Mishra, S.N., Mohanta, S.K., Davane, S.M. et al. Defect induced magnetic interactions in highly oriented pyrolytic graphite (HOPG): a local investigation using TDPAD method. Hyperfine Interact 197, 71–75 (2010). https://doi.org/10.1007/s10751-010-0238-8

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  • DOI: https://doi.org/10.1007/s10751-010-0238-8

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