Influence of heat and UV light on the coercive field of lithium niobate crystals
Tóm tắt
Heating and UV illumination reduce the coercive field of lithium niobate crystals. It is found that both effects add up, leading to the conclusion that the underlying mechanisms are different. We present arguments that heating leads to an increased ionic conductivity that changes defect structures which pin domain walls, while UV illumination enables electrical screening of the pinning defects by photo-excited electrons.
Tài liệu tham khảo
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