Domain-Wall-Like Structures in Ferroelectric Crystals

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概要

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• X-ray diffraction topographic studies on the procedure of polarization reversal of ferroelectric thiourea and on the change in the domain configuration of NaNO_2 near the Curie temperature T_c have been made. Polarization reversal of thiourea takes place via an intermediate state which is domain-wall-like in structure. This procedure is the same as the case of NaNO_2. On the topographs of NaNO_2 taken at the temperatures near T_c width of the domain walls become wider on approaching to T_c, and at the ferro-antiferro phase boundaries all domains are eroded by the broadened domain walls. The results of the present study together with our previous X-ray topographic studies on NaNO_2 and on thiourea suggest that the domain walls, the intermediate states of polarization reversal and the modulated incommensurate phases above T_c resemble in structure.

• 社団法人日本物理学会の論文
• 1994-04-15

著者

• Takagi Masayoshi

  Department Of Electrical And Computer Engineering Nagoya Institute Of Technology

• Takagi Mikio

  Department Of Applied Physics The University Of Tokyo

• SUZUKI Shigeo

  SANYO Tsukuba Research Center

• Takagi M

  Department Of Electrical And Computer Engineering Nagoya Institute Of Technology

• Suzuki Shigeo

  Sanyo Electric Co. Ltd. Tsukuba Research Center

• Suzuki Shigeo

  Sanyo Tsukuba Rc

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