The effect of Cs on the structural properties of barium titanate hollandites

被引：0
|
作者：
Whittle, KR [1 ]
Lumpkin, GR [1 ]
Ashbrook, SE [1 ]
机构：
[1] Univ Cambridge, Cambridge Ctr Ceram Immobilisat C3i, Dept Earth Sci, Cambridge CB2 3EQ, England
来源：
SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXVIII | 2004年 / 824卷
关键词：
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Hollandite, based on Ba and Ti, has been shown to be an ideal medium by which active Cs-135 and Cs-137 can be immobilised. Diffraction measurements have shown that Cs modifies the symmetry of the material, from monoclinic to tetragonal. Experiments carried out here show the effects of Cs on two hollandite systems based on Ba-Al-Ti and Ba-Mg-Ti. Structural measurements are reported for neutron diffraction, and MAS NMR. The results show that Cs modifies the overall crystal symmetry while having little effect on the order/disorder of Al-Ti and Mg-Ti octahedra.
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页码：243 / 248
页数：6
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