MEDIUM-RANGE ORDER IN THE CATION DISTRIBUTION OF A CALCIUM SILICATE GLASS

被引：237

作者：

GASKELL, PH ^{[1
]}

ECKERSLEY, MC ^{[1
]}

BARNES, AC ^{[1
]}

CHIEUX, P ^{[1
]}

机构：

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

来源：

NATURE | 1991年 / 350卷 / 6320期

关键词：

D O I：

10.1038/350675a0

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Silicate glasses have conventionally been regarded as silicate frameworks in which cations are distributed at random. Neutron scattering from isotopically substituted samples allows correlations between cations to be investigated beyond the nearest-neighbour coordination shell, and shows that a degree of ordering persists over distances approaching 1 nm. The structural picture that emerges has elements of long-range randomness coexisting with both short- and medium-range order.

引用

页码：675 / 677

页数：3

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