Paper Title:
Magnetic Mapping - A Way to Test and Understand Current Flows in Thin and Bulk Superconductors
  Abstract

Nondestructive testing of superconducting blocks and thin films is a worth point in their development and their industrial production. The most intrinsic characteristic to be tested is the critical current, so is the maximum current can be carried in the superconducting state. The measurement of the current flowing through the samples could be done by direct transport experiments but this means using specific samples, and only the mean current may be found. Distribution of current density in the sample is more relevant because it yields the map of inhomogeneity of the samples, and its effect in the current density distribution. Magnetic measurements have been developed by Hall scanning and magneto-optical effect, allowing the mapping of the component of the magnetic field perpendicular to a surface of the sample created by the current distribution. By solving the inverse Biot-Savart problem a map of current densities can be obtained. We will present the status of the magnetic measurements obtained by exploring superconducting bulks and tapes magnetized by an external field and the magnetic map generated by the current carried through superconducting wires.

  Info
Periodical
Edited by
P. VINCENZINI and A. RIGAMONTI
Pages
1-6
DOI
10.4028/www.scientific.net/AST.47.1
Citation
X. Granados, S. Iliescu, B. Bozzo, E. Bartolome, T. Puig, X. Obradors, J. Amorós, M. Carrera, "Magnetic Mapping - A Way to Test and Understand Current Flows in Thin and Bulk Superconductors", Advances in Science and Technology, Vol 47, pp. 1-6, Oct. 2006
Online since
October 2006
Price
US$ 28,-
Share
Authors: K. Sasagawa, N. Yamaji, S. Fukushi
Abstract:As silicon ICs continue to scale down, several reliability issues have emerged. Electromigration- the transportation of metallic atoms by...
2958
Authors: Eugen R. Neagu, C.J. Dias, M.C. Lança, Rui Igreja, José N. Marat-Mendes
Abstract:The isothermal charging current and the isothermal discharging current in low mobility materials are analyzed either in terms of polarization...
437
Authors: Xiang Jie Wang, Jian Zhong Cui, Hai Tao Zhang, Qing Feng Zhu
Abstract:During the low frequency electromagnetic casting process, the electromagnetic parameter plays an important role among the casting parameters....
215
Authors: Hong Ming Wang, Bo Feng Yang, Bang Min Song, Yi Nan Zhao
Abstract:A transient analysis mathematic model was established via ANSYS. The variation laws of magnetic induction density, induced eddy current and...
189