Superconducting properties of iron-platinum-arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4)

T. Tamegai, Q. P. Ding, T. Taen, F. Ohtake, H. Inoue, Y. Tsuchiya, S. Mohan, Y. Sun, Y. Nakajima, S. Pyon, H. Kitamura

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5 Citations (Scopus)


High-quality single crystals of iron-platinum arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4) have been grown and their superconducting properties are characterized. The n = 4 and n = 3 compounds have Tc's ∼ 30 K and 13 K, respectively. Reflecting a modest anisotropy of the system, resistive transition for H//c-axis shows modest broadening in both systems. Magneto-optical imaging shows that superconductivity in both compounds is rather homogeneous, with the critical current density, Jc, ∼1 × 105 A/cm2 at 5 K under self-field. Proton irradiation up to 4 × 1016 cm-2 into n = 3 compound is found to have Tc suppression by ∼2 K and Jc enhancement by a factor of three at low temperatures.

Original languageEnglish
Pages (from-to)65-68
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Publication statusPublished - 2013


  • Critical current density
  • Iron-based superconductors
  • Iron-platinum-arsenide
  • Magneto-optical imaging


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