Analysis of the local order in the glacial state of triphenyl phosphite by neutron diffraction
Analysis of the local order in the glacial state of triphenyl phosphite by neutron diffraction
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DOI：
10.1039/b206019a
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发表时间：
2002-11-15
影响因子：
3.3
通讯作者：
Grandjean, D
中科院分区：
文献类型：
--
作者：
Hedoux, A;Dore, J;Grandjean, D
为了分析亚磷酸三苯酯在不同温度T-a下从过冷液体到冰态的等温转变过程中局域有序度的变化，在宽Q范围（Q（max）= 16埃（-1））进行了中子衍射研究。直接的证据是从分析的衍射图案的时间依赖性，无论是在低Q-和高Q-制度，在冰川作用期间观察到的结构变化是一个结晶过程的签名。因此，从低温冷却的液体到冰态的转变可以解释为一次失败的结晶到亚微晶态。
A neutron diffraction study over a wide Q-range (Q(max) = 16 Angstrom(-1)) has been made in order to analyze the change of the local order of triphenyl phosphite through the isothermal transformation between the supercooled liquid into the glacial state at different temperatures T-a. Direct evidence is given from the analysis of the time-dependence of diffraction pattern, both in the low Q- and high Q-regimes that the structural changes observed during the glaciation are the signature of a crystallization process. Consequently, the transformation of thesupercooled liquid into the glacial state can be interpreted as an abortive crystallization into a sub-microcrystalline state.