Role of excess Mg and heat treatments on microstructure and critical current of MgB[sub2] wires.

Autor: Serquis, A., Civale, L., Hammon, D.L., Liao, X.Z., Coulter, J.Y., Zhu, Y.T., Peterson, D.E., Mueller, F.M.
Předmět:
Zdroj: Journal of Applied Physics; 9/15/2003, Vol. 94 Issue 6, p4024, 8p, 2 Black and White Photographs, 1 Chart, 6 Graphs
Abstrakt: Presents a detailed analysis of the effect of heat treatments on the microstructure, magnetization, and transport properties of MgB[sub 2] wires produced by the powder-in-tube method. Measurement of the direct current transport critical current that can be increased or decreased by more than one order of magnitude as compared with the as-drawn wire, depending on the annealing parameters; Correlation of the changes in the critical current with changes in the microstructure.
Databáze: Complementary Index