Fine Structure of the III-I Transition and Molecular Motion in Polytetrafluoroethylene
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概要
- 論文の詳細を見る
The fine structure in the III-I transition region and the molecular motion of polytetrafluoro-ethylene under high pressure have been studied by X-ray diffraction and nuclear magnetic resonance. In the transition region from the high pressure phase III to phase I, two kinds of crystals were observed to coexist over a considerably wide temperature range. This fact suggests that the abnormal attenuation of ultrasonic waves reported in this transition region is due to a density fluctuation of these crystals. Also, a detailed study on the molecular chain conformation and the molecular motion in phase I revealed that there exists in the higher temperature region of phase l a new region, where the molecules have apparently a planar zigzag conformation as a result of right-handed and left-handed helical thermal motions in molecular chains.
- 社団法人応用物理学会の論文
- 1977-05-05
著者
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MATSUSHIGE Kazumi
Department of Electronic Science and Engineering, Kyoto University
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TAKI Seiji
Department of Applied Science, Faculty of Engineering 36, Kyushu University
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Matsushige Kazumi
Department Of Applied Science Faculty Of Engineering Kyushu University
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Taki S
Department Of Applied Quantum Physics Faculty Of Engineering Kyushu University
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Taki Seiji
Department Of Applied Physics Faculty Of Engineering Kyushu University
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TAKEMURA Tetuo
Department of Applied Science, Faculty of Engineering, Kyushu University
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YAMAUCHI Noriyoshi
Department of Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo
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TAKEMURA Tetuo
Ariake National College of Technology
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ENOSHITA Ryosuke
Department of Applied Science, Faculty of Engineering, Kyushu University
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IDE Touru
Department of Applied Science, Faculty of Engineering, Kyushu University
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Ide Touru
Department Of Applied Science Faculty Of Engineering Kyushu University:(present Address)kokura High
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Enoshita Ryosuke
Department Of Applied Science Faculty Of Engineering Kyushu University:(present Address)mitsui Toats
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Enoshita Ryosuke
Department Of Applied Science Faculty Of Engineering Kyushu University:(present Address) Mitsui Toat
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Yamauchi Noriyoshi
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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