FAST IONIC-DIFFUSION IN LI2S INVESTIGATED BY QUASI-ELASTIC NEUTRON-SCATTERING

被引：14

作者：

ALTORFER, F

BUHRER, W

ANDERSON, I

SCHARPF, O

BILL, H

CARRON, PL

机构：

[1] ETH ZURICH,NEUTRON SCATTERING LAB,CH-5232 VILLIGEN,SWITZERLAND

[2] PSI,CH-5232 VILLIGEN,SWITZERLAND

[3] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE 9,FRANCE

[4] DEPT CHIM PHYS,CH-1211 GENEVA,SWITZERLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1994年 / 6卷 / 46期

关键词：

D O I：

10.1088/0953-8984/6/46/012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The Li diffusion in Li2S at high temperatures was investigated by quasielastic neutron scattering techniques on a single crystal of (Li2S)-Li-7. It is shown by using polarized neutrons that the scattering is almost purely incoherent. The data were analysed in terms of an extended Chudley-Elliott jump diffusion model. The Li diffusion process takes place by hopping between regular tetrahedral and interstitial octahedral sites. The mean residence times on the regular Li sites were estimated to be 17.3 ps at T = 1173 K, 6.7 ps at 1273 K and 4.3 ps at 1363 K.

引用

页码：9937 / 9947

页数：11

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