Conductivity and memristive behavior of completely charged domain walls in reduced bidomain lithium niobate

Кубасов, И. В.; Kislyuk, A. M.; Ilina, T. S.; Shportenko, A. S.; Киселев, Д. А.; Turutin, Andrei V.; Темиров, А. А.; Malinkovich, Mikhail D.; Parkhomenko, Yu. N.

doi:10.1039/d1tc04170c

Cited by 13 publications

(10 citation statements)

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“…Chemically reduced crystals become almost transparent, with a wide optical absorption band having a maximum at 2.5 eV which is attributed in literature to bound bipolarons [58,63]. It has been found recently [7] that local switching of "head-to-head" CDW domain structures in LN crystals after reduction annealing provides for efficient control of AFM probe / CDW point contact conductivity. However the stability of the electrophysical properties of these domains has not been studied in detail yet.…”

Section: Introductionmentioning

confidence: 91%

“…The CDW are characterized by the presence of strong local electric fields induced by bound ion charge. Free carriers trapped by this electric field concentrate in the vicinity of the CDW hence potentially forming a conductive channel inside the dielectric material [4][5][6] or locally change the contact properties of the material [7]. The behavior of free carriers in the vicinity of CDW in some materials can be described by the model of quasi-2D electron gas, with the electrical conductivity being metallic [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

Kislyuk¹,

Ilina²,

Кубасов³

et al. 2022

MoEM

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In this work, the effect of long-term room temperature exposure on the electrical conductivity of the charged domain wall (CDWs) in nonpolar x-cut congruent lithium niobate (LiNbO3, LN) crystals has been studied. Bidomain ferroelectric structures containing head-to-head charged domain boundaries have been produced by diffusion annealing in air near the Curie temperature and by infrared annealing. The crystals have been reduction annealed in a nitrogen atmosphere for the formation of color centers and growth of the electrical conductivity. The current measured during the recording of the I-V curves of the specimens using scanning probe microscope after room temperature exposure for 91 days has been found to decrease. The effect of storage conditions on the electrical conductivity of the CDWs has been studied. Degradation of the electrical conductivity does not originate from the effect of environment on the crystal surface. It has been hypothesized that the degradation is caused by distribution of charge carriers shielding the bound charge of the CDWs.

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

Kislyuk¹,

Ilina²,

Кубасов³

et al. 2022

MoEM

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“…The principle of resistance measurement for LN crystal resembles that of conventional resistance measurement, which uses a two-electrode system to apply a DC voltage to the LN sample for accurate measurement. [93][94][95]…”

Section:  Electrical Resistancementioning

confidence: 99%

Omni‐functional crystal: Advanced methods to characterize the composition and homogeneity of lithium niobate melts and crystals

Chen

et al. 2022

Exploration

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Lithium niobate (LN) is a type of multifunctional dielectric and ferroelectric crystal that is widely used in acoustic, optical, and optoelectronic devices. The performance of pure and doped LN strongly depends on various factors, including its composition, microstructure, defects, domain, and homogeneity. The structure and composition homogeneity can affect both the chemical and physical properties of LN crystals, including their density, Curie temperature, refractive index, and piezoelectric and mechanical properties. In terms of practical demands, both the composition and microstructure characterizations these crystals must range from the nanometer scale up to the millimeter and wafer scales. Therefore, LN crystals require different characterization technologies when verifying their quality for various device applications. Optical, electrical, and acoustic technologies have been developed, including x-ray diffraction, Raman spectroscopy, electron microscopy, and interferometry. To obtain detailed structural information, advanced sub-nanometer technologies are required. For general industrial demands, fast and non-destructive technologies are preferable. This review outlines the advanced methods used to characterize both the composition and homogeneity of LN melts and crystals from the micro-to wafer scale.

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“…ЗДС характеризуются наличием сильного локального электрического поля, индуцированного связанными зарядами ионов. Свободные носители заряда под действием электрического поля концентрируются вблизи ЗДС, вследствие чего может формироваться проводящий канал внутри диэлектрического материала [4][5][6] или могут локально изменяться свойства контакта к материалу [7]. При этом в некоторых материалах поведение свободных носителей заряда в окрестности ЗДС может быть описано моделью квазидвумерного электронного газа, а тип электропроводности аналогичен электропроводности металлов [8,9].…”

Section: Introductionunclassified

Degradation of the electrical conductivity of the charged domain wall in reduced lithium niobate

Kislyuk

Ilina

Кубасов

et al. 2022

Izv. vysš. učebn. zaved., Mater. èlektron. teh.

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In the present work, we investigated the effect of prolonged exposure on the electrical conductivity of crystals with a charged domain wall (CDW) in congruent lithium niobate crystals (LiNbO3, LN) of a nonpolar x-cut. Bidomain ferroelectric structures containing charged head-to-head domain boundaries were formed in the samples using methods of diffusion annealing in the air near the Curie temperature and infrared annealing in an oxygen-free environment. Reduction annealing of crystals in a nitrogen atmosphere was carried out to form color centers and concomitant increase in conductivity. Using an atomic force microscope (AFM) we observed the effect of degradation of the current value recorded when measuring the I-V curve. The influence of storage conditions on the electrical conductivity of CDW was studied. It was found that this effect was not related to the influence of the surrounding atmosphere on the surface but was presumably related to the redistribution of charge carriers shielding the bound charge of the CDW.

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Conductivity and memristive behavior of completely charged domain walls in reduced bidomain lithium niobate

Abstract: Among many materials considered for use in domain-wall nanoelectronics, lithium niobate (LiNbO3, LN) is one of the most technological and physically stable. Compared with many other reports where inclined domain...

Cited by 13 publications

References 73 publications

Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

Omni‐functional crystal: Advanced methods to characterize the composition and homogeneity of lithium niobate melts and crystals

Degradation of the electrical conductivity of the charged domain wall in reduced lithium niobate

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Conductivity and memristive behavior of completely charged domain walls in reduced bidomain lithium niobate

Abstract: Among many materials considered for use in domain-wall nanoelectronics, lithium niobate (LiNbO3, LN) is one of the most technological and physically stable. Compared with many other reports where inclined domain...

Cited by 13 publications

References 73 publications

﻿Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

﻿Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

Omni‐functional crystal: Advanced methods to characterize the composition and homogeneity of lithium niobate melts and crystals

Degradation of the electrical conductivity of the charged domain wall in reduced lithium niobate

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Product

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Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals

Degradation of the electrical conductivity of charged domain walls in reduced lithium niobate crystals