DOI QR코드

DOI QR Code

Fabrication and superconducting property of $MgB_2$ tape with Al metal powder addition

  • Published : 2007.05.31

Abstract

The sub micron sized spherical $MgB_2$ powders were synthesized by spray reaction method. $MgB_2$ tapes with Al addition were fabricated by Powder in Tube (PIT) method. The superconducting property and microstructure of Al doped $MgB_2$ tapes were characterized by X-ray diffraction, optical microscopy and transport measurement under magnetic field. The $J_c$ value of $MgB_2$ tapes was increased with 10 vol. % Al addition. The $J_c$ value of 5,500 A/$cm^2$ and 11,000 A/$cm^2$ at 4.2 K and 5 T were obtained for the $MgB_2$ tape and 10 vol. % of Al added $MgB_2$ tape without heat treatment, respectively. The $J_c$ value of 8,000 A/$cm^2$ and 33,000 A/$cm^2$ at 4.2 K and 5 T were obtained for the $MgB_2$ tape and 10 vol. % of Al added $MgB_2$ tape with heat treatment, respectively. The $J_c$-B curves show enhancement in $J_c$ (B), which suggests that the microstructure and transport properties of $MgB_2$ tapes have been improved with Al addition.

Keywords

References

  1. J. Nagamatsu, N. Nakagawa, Y. Zenitani, and J. Akimitsu, 'Superconductivity at 39 K in magnesium diboride,' Nature, 410, pp. 63-64, 2001 https://doi.org/10.1038/35065039
  2. D. C. Labalestier, M. O. Rikel, L. D. Cooley, A. A. Polyanskii, J. Y. Jiang, S. Patnaik, X. Y. Cai, D. M. Feldmann, A. Gurevich, A. A. Squitieri, M. T. Naous, C. B. Eom and E. E. Hellstrom, 'Strongly linked current flow in polycrystalline forms of the superconductor $MgB_2$,' Nature, 410, pp. 186-189, 2001 https://doi.org/10.1038/35065559
  3. H. Kumakura , Y. Takano, H. Fuji, K Togano, H. Kito and H. Ihara., 'Critical current densities and irreversibility fields of $MgB_2$ bulks,' Physica C, 363, pp. 179-183, 2001 https://doi.org/10.1016/S0921-4534(01)00935-2
  4. S. Jin, H. Mavoori, C. Bower and R. B. van Dover, 'High critical currents in iron-clad superconducting $MgB_2$ wires,' Nature, 411, pp. 563-565, 2001 https://doi.org/10.1038/35079030
  5. G. Grasso, A. Malagoli, C. Ferdeghini, S. Roncallo, V. Braccini, A. S. Siri and M. R. Cimberle, 'Large transport critical currents in unsintered $MgB_2$ superconducting tapes,' Appl. Phys. Lett., 79(2), pp. 230-232, 2001 https://doi.org/10.1063/1.1384905
  6. H. Kumakura, A. Matsumoto, H. Fuji and K. Togano, 'High transport critical current density obtained for powder-in-tube-processed $MgB_2$ tapes and wires using stainless steel and Cu-Ni tubes,' Appl. Phys. Lett., 79(15), pp. 2435-2437, 2001 https://doi.org/10.1063/1.1407856
  7. S. Soltanian, X. L. Wang, I. Kusevic, E. Babic, A. H. Li, M. J. Qin, J. Horvat, H. K. Liu, E. W. Collings, E. Lee, M. D. Sumption and S. X. Dou, 'High-transport critical current density above 30K in pure Fe-clad $MgB_2$ tape,' Physica C, 361, pp. 84-90, 2001 https://doi.org/10.1016/S0921-4534(01)00780-8
  8. Y. Takano, H. Takeya, H. Fuji, H. Kumakura, T. Hatano, K. Togano, H. Kito, and H. Ihara, 'Superconducting Properties of $MgB_2$ Bulk Materials Prepared by High Pressure Sintering,' Appl. Phys. Lett., 78, pp. 2914-2916, 2001 https://doi.org/10.1063/1.1371239
  9. S. Patnaik, L. D. Cooley, A. Gurevich, A. A. Polyanskii, J. Jiang, X. Y. Cai, A. A. Squitieri, M. T. Naus, M. K. Lee, J. H. Choi, L. Belenky, S. D. Bu, J. Letteri, X. Song, D. G. Schlom, S. E. Babcock, C. B. Eom, E. E. Hellstrom and D. C. Labarestier, 'Electronic anisotropy, magnetic field-temperature phase diagram and their dependence on resistivity in c-axis oriented $MgB_2$ thin films,' Supercond. Sci. Technol., 14, pp. 315-319, 2001 https://doi.org/10.1088/0953-2048/14/6/304
  10. S. X. Dou, S. Soltanian, X. L. Wang, P. Munroe, S. H. Zhou, M. Ionescu, H. K. Liu, and M. Tomsic, 'Enhancement of the critical current density and flux pinning of $MgB_2$ superconductor by nanoparticle SiC doping,' Appl. Phys. Lett., 81 (2002) 3419 https://doi.org/10.1063/1.1517398
  11. Wiley Encyclopedia of Electrical and Electronics Engineering, ed. By J. G. Webster, vol. 21, Wiley, New York, 1999, pp. 75-87
  12. Metals Handbook, 10th ed., vol.2, 'Progress and Selection Nonferrous Alloys and Special Purpose Materials,' ASM Intl., 1990, pp. 1060-1076
  13. Y. Zhao, Y. Feng, D. X. Huang, T. Machi, C. H. Cheng, K. Nakao, N. Chikumoto, Y. Fudamoto, N. Koshizuka and M. Murakami, 'Doping Effect of Zr and Ti on the critical current density of $MgB_2$ bulk superconductors prepared under ambient pressure,' Physica C, 378-381, pp. 122-128, 2002 https://doi.org/10.1016/S0921-4534(02)01395-3
  14. K. Tachikawa, Y. Yamada, O. Suzuki, M. Enomoto and M. Aodai, 'Effect of metal powder addition on the critical current in $MgB_2$ tapes,' Physica C, 382, pp. 108-112, 2002 https://doi.org/10.1016/S0921-4534(02)01207-8