Role of nanosecond processes in the formation of domains in ferroelectric crystals |
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| Authors: | A. V. Golenishchev-Kutuzov V. A. Golenishchev-Kutuzov R. I. Kalimullin A. A. Potapov |
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| Affiliation: | 1. Kazan State Power Engineering University, Kazan, 420044, Russia
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| Abstract: | The contribution from pyroelectric and photovoltaic effects to the formation of light-induced domains in crystals of oxide ferroelectrics of lithium niobate type upon irradiation by nanosecond focused laser beams is considered. It is established that inverted domains are formed in irradiated regions under the combined effect of generated pyroelectric and photovoltaic fields with a sharp increase in temperature. It is shown that the most stable domains are formed in lithium niobate samples containing Fe2+ and Fe3+ impurity ions. |
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