Phase diagram of the NdFe1-xRhxAsO superconductor

H. Y. Shi; X. L. Wang; T. -L. Xia; Q. M. Zhang; X. Q. Wang; T. -S. Zhao

doi:10.1002/pssr.201004008

Phase diagram of the NdFe1-xRhxAsO superconductor

Superconductivity 2015-05-18 v1 Materials Science

Authors: H. Y. Shi , X. L. Wang , T. -L. Xia , Q. M. Zhang , X. Q. Wang , T. -S. Zhao

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Abstract

Polycrystalline samples with a nominal composition of NdFe1-xRhxAsO (0 <= x <= 0.25) were synthesized using a solid state reaction method. Bulk superconductivity with a maximum Tc = 13 K is observed in the x = 0.1 sample. A temperature-composition phase diagram is established for the NdFe1-xRhxAsO system based on the electrical resistivity and magnetization measurements. A first-order-like transition from an antiferromagnetic state to the superconducting state at a critical Rh-doping point xc = 0.045 is observed in the present phase diagram. The value for the upper critical field Hc2(0) is estimated to be about 26 T for the x = 0.10 sample by using the WHH theory.

Keywords

superconductivity phase diagram ndfe1-xrhxaso antiferromagnetic transition upper critical field

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@article{arxiv.1002.0877,
  title  = {Phase diagram of the NdFe1-xRhxAsO superconductor},
  author = {H. Y. Shi and X. L. Wang and T. -L. Xia and Q. M. Zhang and X. Q. Wang and T. -S. Zhao},
  journal= {arXiv preprint arXiv:1002.0877},
  year   = {2015}
}

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6 pages, 4 figures

Phase diagram of the NdFe1-xRhxAsO superconductor

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