Mn-substitution effects on MgB2 superconductor

Sheng Xu; Yutaka Moritomo; Kenichi Kato; Arao Nakamura

doi:10.1143/JPSJ.70.1889

Mn-substitution effects on MgB2 superconductor

Superconductivity 2009-11-07 v1 Materials Science

Authors: Sheng Xu , Yutaka Moritomo , Kenichi Kato , Arao Nakamura

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Abstract

Effects of magnetic impurity on the superconductivity has been investigated in Mg1-xMnB2. With increase of Mn concentration x, the lattice constant c (perpendicular to the boron sheet) decreases at a rate of -1.4 % (= dlnc/dx), while a remains nearly unchanged. The transition temperature Tc steeply decreases with $x$ at a rate of dTc/dx = - 159 K. These results suggest that superconducting state of the parent MgB2 is amenable to the magnetic impurities, i.e., Mn2+.

Keywords

mgb2 superconductivity magnetocaloric effect magnetization

Cite

@article{arxiv.cond-mat/0104534,
  title  = {Mn-substitution effects on MgB2 superconductor},
  author = {Sheng Xu and Yutaka Moritomo and Kenichi Kato and Arao Nakamura},
  journal= {arXiv preprint arXiv:cond-mat/0104534},
  year   = {2009}
}

Comments

2 pages, 5 figure

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