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Autor:
Ma, Yanwei, Yao, Chao, Zhang, Xianping, Lin, He, Wang, Dongliang, Matsumoto, A., Kumakura, H., Tsuchiya, Y., Sun, Y., Tamegai, T.
Publikováno v:
Supercond. Sci. Technol. 26 (2013) 035011
We report the temperature dependence of the transport critical current density (Jc) in textured Sr1-xKxFe2As2/Fe (Sr122) tapes fabricated by an ex situ powder-in-tube process. Critical currents were measured in magnetic fields up to 0-15 T and/or the
Externí odkaz:
http://arxiv.org/abs/1302.4855
Autor:
Togano, K., Gao, Z. S., Taira, H., Ishida, S., Kihou, K., Iyo, A., Eisaki, H., Matsumoto, A., Kumakura, H.
We found that the transport Jc of the ex-situ PIT processed (Ba,K)Fe2As2 (Ba-122) wire with single Ag sheath can be significantly enhanced by repeating the combined process of rolling and heat treatment. The transport Jc (4.2 K and 10 T) of 4.4 x 103
Externí odkaz:
http://arxiv.org/abs/1302.0482
Publikováno v:
Physica C, 471, 1150 (2011)
We fabricated FeTe0.5Se0.5 superconducting wires using ex-situ Powder-in-tube method with an Fe sheath. It was amazing that superconducting current was observed in the as-drawn wire without any heat treatments. By heat treatment at 200C for 2 hours,
Externí odkaz:
http://arxiv.org/abs/1012.1404
Publikováno v:
IEEE Trans. Appl. Supercond. 21, 2858 (2011)
FeTe0.5Se0.5 superconducting wires have been fabricated using ex-situ PIT method with an Fe sheath. Among the other FeAs-based superconductor, FeTe0.5Se0.5 has great advantage for application due to binary composition and less toxic. Surprisingly, su
Externí odkaz:
http://arxiv.org/abs/1008.1447
Publikováno v:
J. Appl. Phys. 104, 063911 (2008)
A comprehensive study of the effects of carbohydrate doping on the superconductivity of MgB2 has been conducted. In accordance with the dual reaction model, more carbon substitution is achieved at lower sintering temperature. As the sintering tempera
Externí odkaz:
http://arxiv.org/abs/0810.1558
We succeeded in the fabrication of high-Jc MgB2/Fe wires applying the internal Mg diffusion (IMD) process with pure Mg core and SiC addition. A pure Mg rod with 2 mm diameter was placed at the center of a Fe tube, and the space between Mg and Fe tube
Externí odkaz:
http://arxiv.org/abs/0712.2273
Autor:
Kim, J. H., Yeoh, W. K., Qin, M. J., Xu, X., Dou, S. X., Munroe, P., Kumakura, H., Nakane, T., Jiang, C. H.
We investigated the doping effects of SWCNTs and MWCNTs on the Tc, lattice parameters, Jc(B), microstructure, and Hc2 of MgB2/Fe wire. These effects systematically showed the following sequence for Tc and the a-axis: the SWCNT doped wire < the MWshor
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607540
We fabricated in situ powder-in-tube processed MgB2/Fe tapes using aromatic hydrocarbon of benzene, naphthalene, and thiophene as additives, and investigated the superconducting properties. We found that these aromatic hydrocarbons were very effectiv
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509086
The metastable phase of an yttrium sesquicarbide compound, which was vary recently reported as a new superconductive phase with a Tc value of 18 K, was prepared under high pressure from the nominal composition of Y2C3 and Y2C2.9B0.1 in order to inves
Externí odkaz:
http://arxiv.org/abs/cond-mat/0311561