Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 629-634 |
| Seitenumfang | 6 |
| Fachzeitschrift | Zeitschrift fur Physikalische Chemie |
| Jahrgang | 156 |
| Ausgabenummer | Part_2 |
| Publikationsstatus | Veröffentlicht - 1988 |
| Extern publiziert | Ja |
Abstract
In liquid Li-Ge alloys with concentrations up to 55 at% Ge the spin- o lattice relaxation rate 1/T1 of β-active 8Li nucleT was measured as a function of temperature T. The relaxation rate decreases rapidly when Ge is added to Li, up to about 20 at% Ge; for higher Ge-concentrations 1/T1 is approximately constant. Combining 1/T1 with 7Li Knight shift data the enhancement factor n of the measured rate relative to the Korringa rate was obtained, n exhibits maxima at 20 and 50 at% Ge. The maximum at 20 at% Ge is probably due to the formation of a liquid octet compound similar to liquid Li4Pb. The maximum in n at the equiatomic composition is unexpected according to recent tight-binding calculations in which the stability of tetrahedral clusters was considered as a function of the size of the alkali ion.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Physikalische und Theoretische Chemie
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in: Zeitschrift fur Physikalische Chemie, Jahrgang 156, Nr. Part_2, 1988, S. 629-634.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Nuclear Spin-Lattice Relaxation in Liquid Lithium-Germanium Alloys
AU - Van Der Marel, C.
AU - Heitjans, P.
AU - Ackermann, H.
AU - Bader, B.
AU - Freiländer, P.
AU - Schirmer, A.
AU - Stöckmann, H. J.
PY - 1988
Y1 - 1988
N2 - In liquid Li-Ge alloys with concentrations up to 55 at% Ge the spin- o lattice relaxation rate 1/T1 of β-active 8Li nucleT was measured as a function of temperature T. The relaxation rate decreases rapidly when Ge is added to Li, up to about 20 at% Ge; for higher Ge-concentrations 1/T1 is approximately constant. Combining 1/T1 with 7Li Knight shift data the enhancement factor n of the measured rate relative to the Korringa rate was obtained, n exhibits maxima at 20 and 50 at% Ge. The maximum at 20 at% Ge is probably due to the formation of a liquid octet compound similar to liquid Li4Pb. The maximum in n at the equiatomic composition is unexpected according to recent tight-binding calculations in which the stability of tetrahedral clusters was considered as a function of the size of the alkali ion.
AB - In liquid Li-Ge alloys with concentrations up to 55 at% Ge the spin- o lattice relaxation rate 1/T1 of β-active 8Li nucleT was measured as a function of temperature T. The relaxation rate decreases rapidly when Ge is added to Li, up to about 20 at% Ge; for higher Ge-concentrations 1/T1 is approximately constant. Combining 1/T1 with 7Li Knight shift data the enhancement factor n of the measured rate relative to the Korringa rate was obtained, n exhibits maxima at 20 and 50 at% Ge. The maximum at 20 at% Ge is probably due to the formation of a liquid octet compound similar to liquid Li4Pb. The maximum in n at the equiatomic composition is unexpected according to recent tight-binding calculations in which the stability of tetrahedral clusters was considered as a function of the size of the alkali ion.
UR - http://www.scopus.com/inward/record.url?scp=84913894936&partnerID=8YFLogxK
U2 - 10.1524/zpch.1988.156.Part_2.629
DO - 10.1524/zpch.1988.156.Part_2.629
M3 - Article
AN - SCOPUS:84913894936
VL - 156
SP - 629
EP - 634
JO - Zeitschrift fur Physikalische Chemie
JF - Zeitschrift fur Physikalische Chemie
SN - 0942-9352
IS - Part_2
ER -