Investigation of domain structure and switching processes in ferroelectrics by the liquid crystal method

Dontzova, L. I.; Тихомирова, Н. А.; Shuvalov, L. A.

doi:10.1080/00150198908018085

Cited by 43 publications

(10 citation statements)

References 19 publications

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“…39 The increase in the spontaneous polarization raises the activation energy needed for detrapping the defects. 40 The spontaneous polarization of BCTZ is considerably lower than in PZT and BNT-BT materials, indicating shallow trapping wells at the domain boundaries. As such, the trapped oxygen vacancies are likely to be unpinned by the external field 39,41 , and domain wall pinning and unpinning can occur at the same time during bipolar cycling leading to the slow degradation rate observed.…”

Section: Discussionmentioning

confidence: 97%

“…The trap depth for the defects at domain walls depends on the type of charges and the magnitude of spontaneous polarization . The increase in the spontaneous polarization raises the activation energy needed for detrapping the defects . The spontaneous polarization of BCTZ is considerably lower than in PZT and BNT‐BT materials, indicating shallow trapping wells at the domain boundaries.…”

Section: Discussionmentioning

confidence: 99%

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High Bipolar Fatigue Resistance of BCTZ Lead‐Free Piezoelectric Ceramics

et al. 2015

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(Ba, Ca)(Ti, Zr)O3 ceramics have been considered as a potential lead‐free alternative to commonly used lead‐based piezoelectric ceramics due to their high piezoelectric performance at room temperature. In this study, the bipolar fatigue behavior of this material is investigated at room temperature. Two compositions were cycled with a bipolar electric field signal at 10 Hz with a maximum of three times the coercive field for up to approximately 107 cycles. Both investigated compositions exhibited high bipolar fatigue resistance compared to other ceramics reported in the literatures. The high fatigue resistance originates from the lack of mechanical damage and a weak domain wall pinning effect due to their location in the phase transition region. It was also found that pore morphology affected bipolar fatigue behavior.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

High Bipolar Fatigue Resistance of BCTZ Lead‐Free Piezoelectric Ceramics

et al. 2015

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“…These have much in common with such well‐known phenomena as switching in ferromagnetics and liquid crystals. To date several attempts have been made to measure the kinetics of the spontaneous polarization, using for example electron microscopy (SEM and TEM), nematic liquid crystals and pyroelectric probe scanning . In this context, a unique experiment to record this process in pseudo 3D has been made, meaning in only two spatial dimensions and time as the third dimension, which is typically considered as (2 d + 1) dynamics.…”

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confidence: 99%

3D Imaging of Ferroelectric Kinetics during Electrically Driven Switching

et al. 2016

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“…GASH has a perfect cleavage plane normal to the polar axis c , which is quite suitable for studying the domain structure. It has been studied using various techniquea, among them scanning electron microscopy [6], powder deposition [ 7 ] , pyroelectric probe imaging [ 8 ] , nematic liquid crystals [ 9 ] , and, recently, by AFM with micrometer resolution [3,4].…”

Section: (Received 17 March 1994)mentioning

confidence: 99%