A Change of the Direction of Spontaneous Polarization in NaNO_2 by a Lateral AC Electric Field.

概要

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A ferroelectric 50c/s D-E hysteresis loop was observed in a c plate of NaNO_2, after the strength of applied field had once fairly been increased for a while, in spite of the fact that the spontaneous polarization of this ferroelectric is regularly in the b direction. A microscopic observation of such converted c plate revealed that in the major part of the region under electrodes the original b direction had been changed to roughly definite directions inclined to all of the original three crystallographic axes. These experimental results seem to support an opinion that the polarization reversal in NaNO_2 would be realized by a rotational behavior of NO_2 radicals and suggest that the behavior of NO_2 radicals in the polarization reversal would be an unexpectedly complex one in which the three kinds of rotations around three crystallographic axes are mixed up with each other.
社団法人日本物理学会の論文
1964-11-05