Mechanism of protonic conduction in defect pyrochlore HNbWO6.xH(2)O using MAS NMR

被引：8

作者：

Binesh, N

Bhat, V

Bhat, SV

机构：

[1] INDIAN INST SCI,DEPT PHYS,BANGALORE 560012,KARNATAKA,INDIA

[2] INDIAN INST TECHNOL,CTR MAT SCI,KHARAGPUR 721302,W BENGAL,INDIA

来源：

SOLID STATE IONICS | 1996年 / 86-8卷

关键词：

protonic conduction; magic angle spinning NMR; hydration;

D O I：

10.1016/0167-2738(96)00232-9

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：

We have carried out H-1 Magic Angle Spinning (MAS) NMR measurements at various spinning speeds (1-12 kHz) on HNbWO(6)xH(2)O (x = 0 and 1) defect pyrochlore systems. The variation of the line width with the spinning speed in the two systems points towards the presence of motions with different time scales. We conclude that the mechanism of conduction in both the compounds are similar except that the proton hopping in hydrated form is assisted by the water of hydration.

引用

页码：665 / 668

页数：4

共 7 条

[1]

ANDREW ER, 1981, PHILOS T ROY SOC A, V229, P29

[2] CHEMICAL-SHIFT SPECTROSCOPY OF PROTONIC CONDUCTION IN LAYERED AND DEFECT PYROCHLORE HNBWO6-CENTER-DOT-XH2O [J].