NMR-STUDY OF FLUORIDE-ION AND PROTON MOTION IN N2H5SN3F7

被引：1

作者：

GRANIER, W ^{[1
]}

ALA, T ^{[1
]}

VILMINOT, S ^{[1
]}

BATTUT, JP ^{[1
]}

DUPUIS, J ^{[1
]}

SOUDANI, S ^{[1
]}

机构：

[1] CNRS,ELECTR LAB,ERA 90,F-63170 CLERMONT FERRAND,FRANCE

来源：

SOLID STATE IONICS | 1991年 / 44卷 / 3-4期

关键词：

D O I：

10.1016/0167-2738(91)90003-T

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Measurements of relaxation times of the nuclear spin of protons and fluoride ions in N2H5Sn3F7 as a function of temperature have revealed three kinds of motions: (1) a rotation of the protons of the NH3 group which is predominant below 180 K; (2) a motion that has been assigned to the NH2 part of the N2H5+ ion. This motion dominates the relaxation from 180 to 250 K; (3) a translation of the fluoride ions in the Sn3F7 layers, detected from 250 K to 386 K, domain where the compound is a F- conductor (sigma(360 K) = 10(-4) OMEGA-1 cm-1). The activation energy measured by NMR and complex impedance are in complete agreement (0.56 eV). Similar relaxation time measurements have been performed on N2H5Sn3F7 in vitreous state.

引用

页码：159 / 166

页数：8

共 7 条

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