论文信息 - In situ video observation of 180° domain kinetics in congruent LiNbO3 crystals

In situ video observation of 180° domain kinetics in congruent LiNbO3 crystals

We report in situ observation of the nucleation and growth of ferroelectric 180° domains in congruent LiNbO3 crystals. The domains nucleate and grow as six-sided polygons. The wall velocity measured at a constant field shows a spike-like behavior with time, suggesting a strong pinning–depinning type of growth mechanism. This behavior is similar to the corresponding transient current measurement which also shows current spikes during domain reversal.

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