INTERNAL FRICTION STUDIES OF THE OXYGEN SNOEK RELAXATION IN GROUP-Va TRANSITION METALS

M. Weller , J. Diehl , G. Hörz , R. Mann , K. Schulze

Snoek peaks of O (or N) i n Va metals exhibit extraordinary broadening at higher O (N) contents. Detailed internal friction measurements on ultrapure Nb-0.7% O confirm that this broadening is symmetric and corresponds to a continuous distribution of relaxation times, which is attributed to a long range repulsive interaction of O atoms ("anticlustering"). The results disagree with the predictions of Powers' and Doyle's clustering model . Addition of small amounts of N causes additional asymmetric broadening of the O Snoek peak on its high temperature side.

Domaines: Articles anciens

M. Weller, J. Diehl, G. Hörz, R. Mann, K. Schulze. INTERNAL FRICTION STUDIES OF THE OXYGEN SNOEK RELAXATION IN GROUP-Va TRANSITION METALS. Journal de Physique Colloques, 1985, 46 (C10), pp.C10-47-C10-50. ⟨10.1051/jphyscol:19851010⟩. ⟨jpa-00225299⟩