Pressure-Induced Tricritical Behavior of the SmA-Cho Transition in COC
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概要
- 論文の詳細を見る
The tricritical nature of the smectic-A-cholesteric (SmA-Cho) transition in cholesteryl oleyl carbonate (COC) was investigated by several methods. Differential thermal analysis (DTA) and volume measurement showed the existence of a tricritical point at 3.1±0.1×10^3 kg/cm^2 and 74℃, where the first-order transition converted to the second-order one. The dynamic properties were studied by ultrasonic measurement, and the differences in the transition processes were observed with a polarized microscope. Spherulites were observed in the smectic-A phase above the tricritical point. The structure of the spherulites and the morphology effects are discussed.
- 社団法人応用物理学会の論文
- 1982-09-20
著者
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Shirouzu Shigenori
Central Research Laboratories Idemitsu Kosan Co. Ltd.
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Okamoto Toshiyuki
Department Of Applied Science Faculty Of Engineering Kyushu University:(present Address)alps Denki C
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Shichijyo S
Mitsui Chemicals Inc.
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Shichijyo Shiro
Department Of Applied Science Faculty Of Engineering Kyushu University
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Takemura T
Ariake National College Of Technology
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Takemura Tetuo
Department Of Applied Physics Faculty Of Engineering Kyushu University
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