TY - JOUR
T1 - Superconducting properties of iron-platinum-arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4)
AU - Tamegai, T.
AU - Ding, Q. P.
AU - Taen, T.
AU - Ohtake, F.
AU - Inoue, H.
AU - Tsuchiya, Y.
AU - Mohan, S.
AU - Sun, Y.
AU - Nakajima, Y.
AU - Pyon, S.
AU - Kitamura, H.
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - Critical current density
KW - Iron-based superconductors
KW - Iron-platinum-arsenide
KW - Magneto-optical imaging
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U2 - 10.1016/j.physc.2013.04.037
DO - 10.1016/j.physc.2013.04.037
M3 - Article
AN - SCOPUS:84884818914
SN - 0921-4534
VL - 494
SP - 65
EP - 68
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
ER -