Magnetic properties of Gd3+ ions in the spatially distributed DNA molecules

V. N. Nikiforov; V. D. Kuznetsov; Yu. M. Yevdokimov; V. Yu. Irkhin

doi:10.1016/j.jmmm.2014.06.008

Magnetic properties of Gd3+ ions in the spatially distributed DNA molecules

Disordered Systems and Neural Networks 2014-06-24 v1

Authors: V. N. Nikiforov , V. D. Kuznetsov , Yu. M. Yevdokimov , V. Yu. Irkhin

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Abstract

Magnetic properties of DNA liquid-crystal dispersions are experimentally investigated by SQUID magnetometer. The magnetic susceptibility of pure DNA and DNA doped by La, and Gd is measured in the region 4.2-300 K. The total magnetic moment is represented as a sum of: the paramagnetic part and negative diamagnetic part. The number of paramagnetic Gd3+ ions is calculated in a good agreement with the number of phosphate complexes. The temperature dependence of magnetic susceptibility indicates the presence of interaction between Gd3+ magnetic moments, which is discussed in terms of long-range RKKY-type exchange in one-dimensional metals.

Keywords

magnetic properties Gd3+ ions DNA molecules SQUID magnetometer magnetic susceptibility RKKY exchange liquid-crystal dispersions

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@article{arxiv.1309.4281,
  title  = {Magnetic properties of Gd3+ ions in the spatially distributed DNA molecules},
  author = {V. N. Nikiforov and V. D. Kuznetsov and Yu. M. Yevdokimov and V. Yu. Irkhin},
  journal= {arXiv preprint arXiv:1309.4281},
  year   = {2014}
}

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Magnetic properties of Gd3+ ions in the spatially distributed DNA molecules

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