Percolative nature of current transport in polycrystalline MgB2 wires

Authors

Mohammed Shahabuddin, King Saud University
Nasser Saleh Alzayed, King Saud University
Sangjun Oh, National Fusion Research Institute
Seyong Choi, Korea Basic Science Institute
Minoru Maeda, Nihon UniversityFollow
Muhammad Shahabuddin Shah, King Saud UniversityFollow
Ashkan Motaman, University of WollongongFollow
Md Shahriar Al Hossain, University of WollongongFollow
Jung Ho Kim, University of WollongongFollow

RIS ID

86071

Publication Details

Shahabuddin, M., Alzayed, N., Oh, S., Choi, S., Maeda, M., Shah, M. Shahabuddin., Motaman, A., Al Hossain, M. & Kim, J. (2014). Percolative nature of current transport in polycrystalline MgB2 wires. Solid State Communications, 181 20-23.

Abstract

The percolation model, taking into account the percolative nature of current transport due to anisotropy, is a powerful tool for predicting the field and temperature dependences of critical current in MgB2 superconducting wires. The critical current behaviour measured from MgB 2 wires can be obviously explained by only four fitting parameters, the anisotropy parameter, the pinning force maximum, the upper critical field along the ab-plane, and the percolation threshold. Moreover, the temperature dependence of the upper critical field is further explained by the dirty-limit two-gap theory.