Intrinsic nanostructural domains: Possible origin of weaklinkless superconductivity in the quenched reaction product of Mg and amorphous B

Authors

S. Li, Nanyang Technological University, Singapore
O. Prabhakar, Nanyang Technological University, Singapore
T. T. Tan, Nanyang Technological University, Singapore
C. Q. Sun, Nanyang Technological University, Singapore
Xiaolin Wang, University of WollongongFollow
Saeid Soltanian, University of WollongongFollow
J. Horvat, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

7663

Publication Details

This article was originally published as: Li, S, Prabhakar, O, Tan, TT, Sun, CQ, Wang, XL, Soltanian, S, Horvat, J & Dou, SX, Intrinsic nanostructural domains: Possible origin of weaklinkless superconductivity in the quenched reaction product of Mg and amorphous B,Applied Physics Letters, 2002, 81(5), 874-876, and may be found here. Copyright 2002 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Abstract

Smooth modulation structure of Mg–B alloy in the quenched reaction product of Mg and amorphous B was studied. It indicates that the MgB2 formed possibly in spinodal decomposition, thus resulting in MgB2 nanodomains. It was found that the nanodomains with small angle boundaries of atomic-scale width were distributed within the subgrains that constitute the clusters in MgB2 grains. This nanostructural characteristic may be intrinsic in the quenched reaction product of Mg and amorphous B. It makes the nanodomain boundaries not act as barriers to the current percolation path, thus exhibiting no weak-link problem in the MgB2.