The use of a metal-insulator-metal system for the study of structural transitions in metals

Zagurenko, T. G.; Kornilov, V. M.; Лачинов, А. Н.

doi:10.1134/1.1395115

Cited by 3 publications

(2 citation statements)

References 16 publications

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“…The appearance of high conductivity in the M-P-M structure during the phase transformation of one of metals was previously attributed to the behavior of effective work function (EWF) of the metal electron in the region of critical temperatures [4,17]. However, this model has not been directly confirmed experi mentally until now.…”

Section: Resultsmentioning

confidence: 77%

Influence of parameters of the potential barrier at the metal/polymer interface on the electronic switching in the metal/polymer/metal structure

2012

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The influence of the first order phase transition on the parameters of the potential barrier at the indium/polymer interface has been investigated. It has been established that the phase transition occurring in the metal initiates switching of the polymer insulator into a high conductivity state. Performed investigations have shown that the main charge transfer mechanism in the metal-polymer-metal structure at high temper atures is the current caused by the electron thermionic emission. The analysis of current-voltage character istics has demonstrated that the first order phase transition in indium leads to the variation in the potential barrier height at the metal/polymer interface by Δϕ ≈ 0.18 eV. It is this phenomenon that is responsible for the electronic switching.

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Section: Resultsmentioning

confidence: 77%

Influence of parameters of the potential barrier at the metal/polymer interface on the electronic switching in the metal/polymer/metal structure

2012

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“…В настоящее время особый интерес представляет исследование переходных состояний, возникающих в окрестности фазовых переходов I рода. Так, например, вблизи точки плавления T m происходит структурирование вещества с образованием особых переходных фаз, которое сопровождается аномалиями термодинамических, электрофизических, оптических, акустических свойств [1][2][3][4][5]. А с помощью прямых (in situ) структурных исследований процесса плавления показано, что в области фазового перехода I рода возникает слоистая фаза толщиной ~3 nm и кристаллические блоки (нанокластеры) размером ~2.5 ×15 nm [6].…”

Section: Introductionunclassified

Effect of dynamic nanostructuring near KCl melting point

Mashkina

Bormontov

2020

Lett. Mater.

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The existence of transient phenomena near the melting point T m is usually accompanied by an anomalous behavior of various macroscopic parameters (heat capacity, thermal conductivity, electrical conductivity, thermal expansion coefficient, self-diffusion coefficient, surface melting) with an increase in the temperature. In addition, an exponential increase in the concentration of point and linear defects with temperature, structural transitions of some types of crystals to a disordered state indicate that, as the melting point is approached, the structure and properties of the solid undergo changes that are nonlinearly dependent on the heating rate, and in the very the transition point T m change abruptly. Some transient processes manifest themselves only under the conditions when the substance is brought into a strongly nonequilibrium state, for example, at significant heating rates. In this work, we analyze the dynamics of structuring of the transitional phases of premelting of KCl in various kinetic regimes. It is revealed that the premelting process is a nonequilibrium fluctuation process accompanied by the appearance of dissipative states near the melting point, characterized by a set of thermodynamic and spectral parameters that nonlinearly depend on the heating rate. Based on the data of X-ray diffraction analysis, the average size of the coherent scattering regions of the premelting phase of KCl was calculated, which vary in the range of 65-90 nm. The size of the coherent scattering regions is in a satisfactory agreement with model calculations of the parameters of nanocluster structures in the transition region (~10-14 nm). In the premelting phase of KCl, a nonmonotonic change in the peak intensity was found, which is associated with thermal fluctuations in the temperature range T ≥ 0.85 T m. The nonlinear change in the thermodynamic and structural parameters of KCl, as well as the fluctuation character of heat release in the transitional premelting region, indicate the dynamic nature of the formation of the nanophase near the melting point of KCl.

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Effect of a Second-Order Phase Transition on the Electrical Conductivity of the Cr–Polymer–Cu Structure

2019

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The use of a metal-insulator-metal system for the study of structural transitions in metals

Cited by 3 publications

References 16 publications

Influence of parameters of the potential barrier at the metal/polymer interface on the electronic switching in the metal/polymer/metal structure

Influence of parameters of the potential barrier at the metal/polymer interface on the electronic switching in the metal/polymer/metal structure

Effect of dynamic nanostructuring near KCl melting point

Effect of a Second-Order Phase Transition on the Electrical Conductivity of the Cr–Polymer–Cu Structure

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