Power-law relationship between critical current density, microstructure, and the n-value in MgB2 superconductor wires

Authors

Ashkan Motaman, University of WollongongFollow
Shaon Barua, University of WollongongFollow
Dipak Patel, University of WollongongFollow
Minoru Maeda, Nihon University
Kookchae Cheong, Korea Institute of Materials Science
Jung Ho Kim, University of WollongongFollow
S X. Dou, University of WollongongFollow
Md Shahriar Al Hossain, University of WollongongFollow

RIS ID

87931

Publication Details

Motaman, A., Barua, S., Patel, D., Maeda, M., Cheong, K., Kim, J., Dou, S. Xue. & Al Hossain, M. Shahriar. (2014). Power-law relationship between critical current density, microstructure, and the n-value in MgB2 superconductor wires. Journal of Superconductivity and Novel Magnetism, 27 (7), 1643-1645.

Abstract

Dissipation-free MgB2 superconducting wires are valuable in terms of practical applications. Herein, we have found a strong correlation between critical current density (J c ) and the n-value extracted from the electric field versus current density characteristic. The power-law relationship (m) between the J c and the n-value, n∝Jmc , represents a critical index which is strongly dependent on operating temperatures.