⁸Li spin relaxation in liquid Li alloys with compound-forming tendency

authored by

P. Heitjans, G. Kiese, C. van Der Marel, H. Ackermann, B. Bader, P. Freiländer, H. J. Stöckmann

Abstract

In liquid Li-Bi, Li-Pb, Li-Sn and Li-Si alloys the spinlattice relaxation rate T₁^-1 of Β-active⁸Li (T_1/2=0.8s) probe nuclei has been measured over wide concentration (c) and temperature (T) ranges. T₁^-1 is governed by hyperfine contact interaction with the conduction electrons. Near the compositions Li₃Bi, Li₄Pb, Li₄Sn and Li₄Si both (T₁T)^-1 and d(T₁T)^-1/dT versus c show marked extrema. These data, when combined with Knightshift and/or conductivity values, inform on the prolongation of the electron "residence time" and the reduction of the density of states at the Fermi surface. There is progressive tendency to electron localization and compound formation in the sequence Li₄Pb, Li₄Sn, Li₃Bi with mainly ionic bonding in the case of liquid Li₃Bi.

External Organisation(s)

Philipps-Universität Marburg
Institut Laue-Langevin

Type

Article

Journal

Hyperfine Interactions

Volume

16

Pages

569-572

No. of pages

4

ISSN

0304-3834

Publication date

12.1983

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics, Condensed Matter Physics, Physical and Theoretical Chemistry

Electronic version(s)

https://doi.org/10.1007/BF02147317 (Access: Unknown)