Post-PbCl2phase transformation ofTeO2
Post-PbCl2phase transformation ofTeO2
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TeO2 的 PbCl2 相变后
DOI：
10.1103/physrevb.72.092101
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发表时间：
2005
影响因子：
3.7
通讯作者：
N. Miyajima
中科院分区：
文献类型：
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作者：
Tomoko Sato;Nobumasa Funamori;T. Yagi;N. Miyajima
用X射线衍射法和拉曼散射法研究了金刚石顶压室的相变。结果表明，当压力约为0时，副亚硫酸盐相转变为配位数为9的结构，这是迄今报道的二氧化碳中配位数最大的配位数。首次观察到在压力约为10℃的条件下，在氧化物中发生了进一步的后相转变。后相的X射线衍射图不能通过假定二卤化物中报道的后结构，如和结构来解释，并且这个相的性质还没有被澄清。与其他氧化物类似，随着压力的增加，相的收缩是相当各向同性的，这与二卤化物相的各向异性收缩形成了鲜明对比。这些结果表明，氧化物的后相转变机制可能与二卤化物的不同。
Phase transformations ofhave been investigated up toby x-ray diffraction and Raman scattering techniques using a diamond-anvil cell. It is found that the paratellurite phase transforms to thestructure with a coordination number of 9, which is the maximum number so far reported in dioxide, at pressures of about. A further transformation to a post-phase has been observed for the first time in dioxides at pressures of about. The x-ray diffraction pattern of the post-phase ofcould not be explained by assuming the post-structures reported in dihalides such as theandstructures, and the nature of this phase has not yet been clarified. Thephase ofcontracted rather isotropically with increasing pressure similar to other dioxides, in marked contrast with the anisotropic contraction of thephases of dihalides. These results suggest that the mechanism of the post-phase transformation in dioxides may be different from that in dihalides.
DOI：
10.1029/jb091ib05p04673
发表时间：
1986-04-10
期刊：
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS
影响因子：
--
作者：
MAO, HK;XU, J;BELL, PM
通讯作者：
BELL, PM