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Закономерности поведения поляризационных токов в сегнетокерамике при электромеханическом воздействии

Закономерности поведения поляризационных токов в сегнетокерамике при электромеханическом воздействии

Abstract

Investigated the current behavior as a function of time in ferroelectric arising from the sequential application of a dc electric field and mechanical stress. It is found that upon application of mechanical stress peak and exponential decline by polarization current is accompanied by jumps of the random nature. Analysis of experimental data conducted by the simulation of the movement of 180 and 180-domain walls in the light of internal mechanical stresses in sample. Based on analysis of assessment of contributions made by 180 and 180-domain walls in the current polarization, as well as the average amplitude of these internal mechanical stresses.

Исследовано временное поведение токов в сегнетокерамике, возникающих при последовательном наложении постоянного электрического поля и механической нагрузки. Обнаружено, что при наложении механической нагрузки пик и экспоненциальный спад тока поляризации сопровождается скачками случайного характера. Анализ экспериментальных данных проведен в рамках модели движения 180 и не 180-доменных стенок с учетом внутренних механических напряжений в образце. На основе анализа сделана оценка вкладов 180 и не 180-доменных стенок в ток поляризации, а также средней величины амплитуды внутренних механических напряжений.

Keywords

МОДЕЛИРОВАНИЕ, ТОК ПОЛЯРИЗАЦИИ, ДОМЕННЫЕ СТЕНКИ, МЕХАНИЧЕСКАЯ НАГРУЗКА, МИКРОРАЗРУШЕНИЯ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold