272 citations · 636 across the 13 of their papers we have counts for
13 papers
High critical current density and low anisotropy in textured Sr1-xKxFe2As2 tapes for high field applications
Zhaoshun Gao, Yanwei Ma, Chao Yao +5
From the application point of view, large critical current densities Jc (H) for superconducting wires are required, preferably for magnetic fields higher than 5 T. Here we show tha…
Fabrication and transport properties of Sr0.6K0.4Fe2As2 multifilamentary superconducting wires
Chao Yao, Yanwei Ma, Chengduo Wang +5
Seven-core Ag/Fe sheathed Sr0.6K0.4Fe2As2 (Sr-122) superconducting wires were produced by the ex situ powder-in-tube (PIT) method. The relationship between the cold-work deformatio…
Improved transport critical currents in Ag and Pb co-doped BaxK1-xFe2As2 superconducting tapes
Chao Yao, Chunlei Wang, Xianping Zhang +8
Fe-clad BaxK1-xFe2As2 superconducting tapes were fabricated by the ex situ powder-in-tube method combined with a short high-temperature annealing technique. The effect of annealing…
Effect of starting materials on the superconducting properties of SmFeAsO1-xFx tapes
Chunlei Wang, Chao Yao, Xianping Zhang +7
SmFeAsO1-xFx tapes were prepared using three kinds of starting materials. It shows that the starting materials have an obvious effect on the impurity phases in final superconductin…
High transport critical current densities in textured Fe-sheathed Sr1-xKxFe2As2+Sn superconducting tapes
Zhaoshun Gao, Lei Wang, Chao Yao +6
We report the realization of grain alignment in Sn-added Sr1-xKxFe2As2 superconducting tapes prepared by ex-situ powder-in-tube method. At 4.2 K, high transport critical current de…
Transport properties and anisotropy in rare earth doped CaFe2As2 single crystals with Tc above 40 K
Yanpeng Qi, Zhaoshun Gao, Lei Wang +6
In this paper we report the superconductivity above 40 K in the electron doping single crystal Ca1-xRexFe2As2 (Re = La, Ce, Pr). The x-ray diffraction patterns indicate high crysta…
Synthesis and properties of La-doped CaFe2As2 single crystals with Tc = 42.7 K
Zhaoshun Gao, Yanpeng Qi, Lei Wang +5
Large single crystals of La-doped CaFe2As2 were successfully synthesized by the FeAs self-flux method. The x-ray diffraction patterns suggest high crystalline quality and c-axis or…
Direct observation of nanometer-scale amorphous layers and oxide crystallites at grain boundaries in polycrystalline Sr1-xKxFe2As2 superconductors
Lei Wang, Yanwei Ma, Qingxiao Wang +8
We report here an atomic resolution study of the structure and composition of the grain boundaries in polycrystalline Sr0.6K0.4Fe2As2 superconductor. A large fraction of grain boun…
Enhanced critical current properties in Ba0.6K0.4+xFe2As2 superconductor by over-doping of potassium
Chunlei Wang, Lei Wang, Zhaoshun Gao +5
Phase-pure polycrystalline Ba0.6K0.4+xFe2As2 with were prepared using a one-step solid-state reaction method. We found that over-doping of potassium can improve critical current de…
One-step method to grow Ba0.6K0.4Fe2As2 single crystals without fluxing agent
Chunlei Wang, Chao Yao, Lei Wang +5
Single crystals of Ba0.6K0.4Fe2As2 with excellent quality have been successfully grown without fluxing agent through a simple one-step method for the first time. X-ray diffraction…
Superconductivity induced by doping Rh in CaFe2-xRhxAs2
Yanpeng Qi, Lei Wang, Zhaoshun Gao +5
In this paper we report the synthesis of iron-based superconductors CaFe2-xRhxAs2 using one-step solid state reaction method, which crystallizes in the ThCr2Si2-type structure with…
Low-temperature synthesis of SmO0.8F0.2FeAs superconductor with Tc = 56.1K
Chunlei Wang, Zhaoshun Gao, Lei Wang +5
We report a systematic study on the effect of sintering temperature on the structural and superconducting properties of nominal SmO0.8F0.2FeAs fabricated by simple one-step solid s…
Low-temperature synthesis of SmFeAsO0.7F0.3 wires with high transport critical current density
Lei Wang, Yanpeng Qi, Dongliang Wang +5
Ag-sheathed SmFeAsO0.7F0.3 (Sm-1111) superconducting wires were prepared by a one-step solid state reaction at temperatures as low as 850~900C, instead of commonly used temperature…