Direct measurement of the thermal expansion of the Si-O bond by neutron total scattering

被引:57
|
作者
Tucker, MG
Dove, MT
Keen, DA
机构
[1] Univ Cambridge, Dept Earth Sci, Mineral Phys Grp, Cambridge CB2 3EQ, England
[2] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England
关键词
D O I
10.1088/0953-8984/12/26/101
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The coefficient of thermal expansion of the Si-O bond has been obtained from neutron total scattering measurements of five different phases of silica, with value (2.2 +/- 0.4) x 10(-6) K-1. This value is smaller than values obtained by conventional x-ray diffraction measurements corrected for rigid-body thermal motion. Three of the datasets used in this study, tridymite and two zeolite structures, are completely new.
引用
收藏
页码:L425 / L430
页数:6
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