Formation of an fcc phase through a bcc metastable state in crystallization of charged colloidal particles.
Formation of an fcc phase through a bcc metastable state in crystallization of charged colloidal particles.
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DOI：
10.1103/physreve.82.010401
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发表时间：
2010-07
期刊：
影响因子：
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通讯作者：
Shenghua Xu;Hongwei Zhou;Zhiwei Sun;Jingchang Xie
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文献类型：
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作者：
Shenghua Xu;Hongwei Zhou;Zhiwei Sun;Jingchang Xie
通过原位监测结构变化与反射光谱仪在胶体结晶过程中，我们提出了直接的实验证据的液体bcc-fcc相变的带电胶体粒子的结晶，作为一种表现的Ostwald的步骤规则。此外，在这个系统中的体心立方亚稳结构的寿命显着降低，随着颗粒体积分数的增加，提供了一个可能的解释“例外”的步骤规则。
By in situ monitoring structural changes with the reflection spectrometer during the colloidal crystallization, we present direct experimental evidence of liquid-bcc-fcc phase transition in crystallization of charged colloidal particles, as a manifestation of the Ostwald's step rule. In addition, the lifetime of the bcc metastable structure in this system decreases significantly with increasing particle volume fraction, offering a possible explanation for "exceptions" to the step rule.