Topographic Study of Ferroelectric NaNO_2 Crystals. II. : Mechanism of Polarization Reversal

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概要

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• X-ray topographic study was made of a sodium nitrite (NaNO_2) single crystal which had been partially polarized with an external d.c. electric field at room temperature. Images with characteristic diffraction contrast found in topographs of the crystal suggest the following process of polarization reversal. By increasing thickness of pre-existing domain boundary walls the intermediate state regions having the same crystal structure as that of the domain boundary walls, are formed first, and on the next step the intermediate state regions once formed are eroded by the domains having the right direction of polarization. Rotation of NO_2 redicals by 180° around their O-O axes will be the molecular mechanism of the polarization reversal under electric field at room temperature.

• 社団法人日本物理学会の論文
• 1972-05-05

著者

• TAKAGI Mieko

  Tokyo Institute of Technology

• SUZUKI Shigeo

  Tokyo Institute of Technology

関連論文

• The Forbidden 222 Electron Reflection from Germanium
• Mechanism of Polarization Reversal in NaNO_2 Single Crystal
• Topographic Study of Ferroelectric NaNO_2 Crystals. II. : Mechanism of Polarization Reversal
• Electron-Diffraction Study of Liquid-Solid Transition of Thin Metal Films
• Topographic Study on Ferroelectric NaNO_2 Crystals. I. : Structure of 180° Domain Walls
• The Thickness Dependence of the Phase Transition Temperature in Thin Solid Films
• Evaporated Metal Films on Ferroelectric Crystals
• Ferroelectric Domain Boundaries of NaNO_2 in X-Ray Diffraction Topographs

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