High transport critical current density obtained for powder-in-tube-processed MgB[sub 2] tapes and wires using stainless steel and Cu–Ni tubes

Kumakura, H.; Matsumoto, A.; Fujii, H.; Togano, K.
October 2001
Applied Physics Letters;10/8/2001, Vol. 79 Issue 15, p2435
Academic Journal
MgB[sub 2] tapes and wires were fabricated by the powder-in-tube method. Stainless steel and Cu–Ni tubes were used as sheath materials, and no heat treatment was applied. The tapes made of stainless steel showed transport critical current density J[sub c] of about 10 000 A/cm2 at 4.2 K and 5 T. A high J[sub c] of about 300 000 A/cm2 was obtained by extrapolating the J[sub c]–B curves to zero field. Multifilamentary (seven-core) MgB[sub 2] wire was successfully fabricated using Cu–Ni tubes. For both tapes and wires, the grain connectivity of MgB[sub 2] was as good as a high-pressure sintered bulk sample. However, the J[sub c] of the Cu–Ni sheathed wire was lower than the stainless steel sheathed tape due to the lower packing density of MgB[sub 2]. © 2001 American Institute of Physics.


Related Articles

  • Reactivity of MgB[sub 2] with common substrate and electronic materials. He, T.; Cava, R. J.; Rowell, John M. // Applied Physics Letters;1/14/2002, Vol. 80 Issue 2, p291 

    The reactivity of MgB[sub 2] with powdered forms of common substrate and electronic materials is reported. Reaction temperatures between 600 and 800 °C, encompassing the range commonly employed in thin-film fabrication, were studied. The materials tested for reactivity were ZrO[sub 2], yttria...

  • High critical currents in iron-clad superconducting MgB[sub 2] wires. Jin, S.; Mavoori, H.; Bower, C.; van Dover, R. B. // Nature;5/31/2001, Vol. 411 Issue 6837, p563 

    Presents a study which reported a fabrication of a metal-clad superconducting magnesium diboride wires. How the metal-clad wires were made; Materials and methods used in the fabrication; Evaluation of the effect of several alloying metal elements on the critical behavior of the magnesium...

  • Large transport critical currents in dense Fe- and Ni-clad MgB[sub 2] superconducting tapes. Suo, HongLi; Beneduce, Concetta; Dhalle´, Marc; Musolino, Nicolas; Genoud, Jean-Yves; Flu¨kiger, Rene´ // Applied Physics Letters;11/5/2001, Vol. 79 Issue 19, p3116 

    We report on the preparation of dense monofilamentary MgB[sub 2]/Ni and MgB[sub 2]/Fe tapes with high critical current densities. In annealed MgB[sub 2]/Ni tapes, we obtained transport critical current densities as high as 2.3×10[sup 5] A/cm[sup 2] at 4.2 K and 1.5 T, and for MgB[sub 2]/Fe...

  • Modification of critical current density of MgB[sub 2] films irradiated with 200 MeV Ag ions. Shinde, S.R.; Ogale, S.B.; Higgins, J.; Choudhary, R.J.; Kulkarni, V.N.; Venkatesan, T.; Zheng, H.; Ramesh, R.; Pogrebnyakov, A.V.; Xu, S.Y.; Qi Li; Xi, X.X.; Redwing, J.M.; Kanjilal, D. // Applied Physics Letters;3/29/2004, Vol. 84 Issue 13, p2352 

    The effect of 200 MeV Ag ion irradiation on the temperature and field dependence of critical current density (J[sub C]) of high quality MgB[sub 2] thin films is studied. Substantial increase in J[sub C] is observed over a certain field range for the film irradiated at a dose of 10[sup 12]...

  • Microstructure–critical current density model for MgB2 wires and tapes. Birajdar, B.; Eibl, O. // Journal of Applied Physics;Feb2009, Vol. 105 Issue 3, pN.PAG 

    MgB2 wires and tapes were prepared by the powder in tube method using different processing technologies and thoroughly characterized for their superconducting properties. Either prereacted MgB2 (ex situ) or a mixture of Mg+2B (in situ) was used as the precursor powder. In some wires the...

  • Magnetic Characterization of SiC Doped Bulk MgB Superconductor. Bumin, D.; Yanmaz, E.; Basoglu, M.; Gencer, A. // Journal of Superconductivity & Novel Magnetism;Feb2011, Vol. 24 Issue 1/2, p211 

    Flux pinning is a very significant mechanism to improve critical current density in MgB for many applications, such as developing the performance of wires and tapes. In this study, we have done a systematic study of SiC inclusions in the main matrix of MgB. Sample production in the form of...

  • Transport of alternating current and direct current by hard superconductors. Critical and... Ulyanov, Alexander N. // Journal of Applied Physics;4/1/1999, Vol. 85 Issue 7, p3726 

    Studies the arbitrary relation between the values of transport and critical currents by hard superconductors. Use of the framework of the Bean critical state model in the study; Calculation of the voltage, voltage waveform and losses in superconductors; Explanation on the origin of the...

  • Critical current in a spin injection device. Sarkar, S.; Raychaudhuri, P.; Mal, P. K.; Bhangale, A. R.; Pinto, R. // Journal of Applied Physics;6/1/2001, Vol. 89 Issue 11, p7502 

    We report on direct evidence of the suppression of critical current due to pair-breaking in a superconducting microbridge when the measurement is carried out by injecting spin-polarized carriers instead of normal electrons. A thin layer of La[sub 0.7]Ca[sub 0.3]MnO[sub 3] was used as the source...

  • Magnesium diboride nanobridges fabricated by electron-beam lithography. Malisa, A.; Charlebois, S.; Lindström, T. // Journal of Applied Physics;12/15/2005, Vol. 98 Issue 12, p124305 

    MgB2 nanobridges were fabricated by e-beam lithography and Ar-ion beam milling. Nanobridges of widths ranging from 60 nm to 1 μm and 3 μm in length were realized by Ar-ion beam milling using amorphous carbon as etching mask. The processing did not harm the superconducting properties...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics