The effective charge of H and T in the a-phase was measured by means of steady-state electromigration at temperatures ranging from 323 to 523K. The results revealed a definite mass dependence (T > H) at lower temperatures, and a tendency for the effective charges of H and T to approach the same value at higher temperatures. The origins of the mass-dependence were analyzed by decomposing the effective charge into direct and wind charges. A trapping effect which was due to a small amount of Zr impurity in the specimen was also identified.

Hydrogen Isotope Electromigration and Impurity Effect in Vanadium K.Fujii, K.Hashizume, Y.Hatano, M.Sugisaki: Journal of Alloys and Compounds, 1999, 282[1-2], 38-43