Abstract
The rather surprising position of the Kirkendall pores in Nb3 Sn superconductor grown by bronze technique is clarified. It is shown that Sn is the fastest diffusing species, which seems to be unusual considering the crystal structure of Nb3 Sn. Further, we explain the dramatic change in the growth rate and the activation energy for growth of the product phase, when the Sn composition in the Cu(Sn) bronze alloy is changed from 7 to 8 at. %.
Original language | English |
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Article number | 231910 |
Journal | Applied Physics Letters |
Volume | 96 |
Issue number | 23 |
DOIs | |
Publication status | Published - 2010 |
MoE publication type | A1 Journal article-refereed |