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

verfasst von

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.

Externe Organisation(en)

Philipps-Universität Marburg
Institut Laue-Langevin

Typ

Artikel

Journal

Hyperfine Interactions

Band

16

Seiten

569-572

Anzahl der Seiten

4

ISSN

0304-3834

Publikationsdatum

12.1983

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik, Kern- und Hochenergiephysik, Physik der kondensierten Materie, Physikalische und Theoretische Chemie

Elektronische Version(en)

https://doi.org/10.1007/BF02147317 (Zugang: Unbekannt)