QUANTIFICATION OF THE DISORDER IN NETWORK-MODIFIED SILICATE-GLASSES

被引：232
作者：
FARNAN, I
GRANDINETTI, PJ
BALTISBERGER, JH
STEBBINS, JF
WERNER, U
EASTMAN, MA
PINES, A
机构：
[1] LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720
[2] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720
来源：
NATURE | 1992年 / 358卷 / 6381期
关键词：
D O I：
10.1038/358031a0
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：
Local order in silicate glasses has been observed by many experimental techniques to be similar to that in crystalline materials. Details of the intermediate-range order are more elusive, but essential for understanding the lack of long-range symmetry in glasses and the effect of composition on glass structure. Two-dimensional O-17 dynamic-angle-spinning nuclear magnetic resonance experiments reveal intermediate-range order in the distribution of inter-tetrahedral (Si-O-Si) bond angles and a high degree of order in the disposition of oxygen atoms around the network-modifying cations.
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页码：31 / 35
页数：5
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