I-129 MOSSBAUERER STUDY OF SUPERIONIC GLASSES AGI-SB2S3 - LOCAL-STRUCTURE AND DIFFUSION EFFECTS

被引：4

作者：

BYCHKOV, EA

GRUSHKO, YS

WORTMANN, G

机构：

[1] ST PETERSBURG INST NUCL PHYS,GATCHINA 188350,USSR

[2] UNIV GESAMTHSCH PADERBORN,FACHBEREICH PHYS,W-4790 PADERBORN,GERMANY

来源：

HYPERFINE INTERACTIONS | 1991年 / 69卷 / 1-4期

关键词：

D O I：

10.1007/BF02401925

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The local environment and the short-range diffusional displacements of the iodide ions induced by the hopping Ag+ ions have been studied in AgI - Sb2S3 superionic glasses using I-129-Mossbauer spectroscopy in the temperature range 4.2 K to 240 K. It was found that the nearest neighbours of the iodide ions are only silver ions; the local environment of iodide is therefore close to that in the crystalline superionic conductor Ag3SI. Diffusion effects are observed above 140 K by characteristic changes in isomer shift, electric-quadrupole interaction and recoil-free fraction. The derived activation energy for the Ag+ ion local hopping is 2 times larger than that of crystalline Ag3SI.

引用

页码：709 / &

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