2021
DOI: 10.1107/s1600576721007366
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Lateral deformations of a crystal of potassium acid phthalate in an external electric field

Abstract: The anisotropy of deformations in potassium acid phthalate crystals arising under the action of an external electric field up to 1 kV mm−1 applied along the [001] polar axis was studied using X-ray diffraction methods at room temperature. Electrical conductivity was measured and rocking curves for reflections 400, 070 and 004 were obtained by time-resolved X-ray diffractometry in Laue and Bragg geometries. Two saturation processes were observed from the time dependences of the electrical conductivity. A shift … Show more

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Cited by 2 publications
(4 citation statements)
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“…The fact that he rubidium biphthalate is free from the charge carrier migration effects found in potassium biphthalate is presumably connected with the considerably higher activation energy of rubidium ions, which is confirmed by an order of magnitude difference in resistances of the abovementioned crystals [24].…”
Section: Discussion Of Resultsmentioning
confidence: 79%
See 1 more Smart Citation
“…The fact that he rubidium biphthalate is free from the charge carrier migration effects found in potassium biphthalate is presumably connected with the considerably higher activation energy of rubidium ions, which is confirmed by an order of magnitude difference in resistances of the abovementioned crystals [24].…”
Section: Discussion Of Resultsmentioning
confidence: 79%
“…In [24] it was found in crystals of potassium biphthalate that application of external electric field results in emergence of two strain types: fast straindue to piezoelectric effect, and relaxation straindue to migration of potassium ions under the field. It was shown, that the second mechanism is characterized by a threshold value of field strength exceeding 500 V/mm, which is defined by the energy of potassium ions activation.…”
Section: Resultsmentioning
confidence: 99%
“…В работе [24] в кристаллах бифталата калия было обнаружено, что приложение внешнего электрического поля приводит к появлению двух видов деформаций: быстрой -за счет пьезоэлектрического эффекта, и релаксационной -за счет миграции ионов калия под полем. Было показано, что для второго механизма характерно пороговое значение напряженности поля более 500 V/mm, определяемое энергией активации ионов калия.…”
Section: методика измерения пьезоэлектрических модулей и оборудованиеunclassified
“…Отсутствие в бифталате рубидия эффектов миграции носителей заряда, обнаруженных в бифталате калия, предположительно связано с существенно большей энергией активации ионов рубидия, что подтверждается разницей сопротивления указанных кристаллов на порядок величины [24].…”
Section: обсуждение результатовunclassified