Electron Microscope Study on Commensurate-Incommensurate Phase Transition of Rb_2ZnCl_4 Crystals

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概要

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• Commensurate-incommensurate (C-IC) phase transition of Rb.ZnCl. is studied bylow temperature transmission electron microscopy. Nucleation ?tnd disappearance ofpairs of "dislocations" composed of six discommensurations (DCs) and their mo-lions along the c plane play an important role in the transition prcccess. During the mo-lions rearrangements of "dislocations" due to interactions with neighbouring DCsare observed. On heating from tlae C to the IC phases, small displacements of the DCsalong the direction perpendicular to the DCs produce rather uniform distribution ofthe DCs in the IC phase. On the other hand on cooling, large displacements of theDCs do not take plase in the C phase. In the C phase specimens are divided into tworegions, one with a low DC density and the other with a high DC density. Pinning ofthe DCs and "dislocations" at defects is also observed.

• 社団法人日本物理学会の論文
• 1988-06-15

著者

• TSUDA Kenji

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• Takada Ken-ichi

  Research Institute For Scientific Measurements Tohoku University

• Tsuda K

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Tsuda K

  Research Institute For Scientific Measurements Tohoku University

• Tsuda Kenji

  Research Institute For Scientific Measurements Tohoku University

• Yagi Katsumichi

  Physics Department,Tokyo Institute of Technology

• TSUDA Kazuya

  Physics Department,Tokyo Institute of Technology

• YAMAMOTO Naoki

  Physics Department,Tokyo Institute of Technology

• Yagi Katsumichi

  Physics Department Tokyo Institute Of Technology

• Yamamoto Naoki

  Physics Department Tokyo Institute Of Technology

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