Direct observation of domains in the low temperature phase of p-terphenyl

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• 作者：Sougoti ; M. ; É ; colivet ; C.
• 关键词：Organic crystals ; Optical properties ; Phase transitions
• 刊名：Solid State Communications
• 出版年：1997
• 出版时间：September, 1997
• 年：1997
• 卷：103
• 期：12
• 页码：699-702
• 全文大小：461 K

文摘

For the first time ferroelastic domains are observed in the low temperature phase of p-terphenyl. These domains are only distinguishable in very thin crystals of a few micrometers. Plane boundaries are found perpendicular to the two-fold axis. Birefringence measurements are compatible with the order parameter temperature dependence as determined by superstructure intensities.