Methods of Theoretical Researches the Properties of Electrotechnical Materials Class of Dielectrics with Hydrogen Bonds

Kalytka, V. A.; Bashirov, A. V.; Таранов, А. В.; Tatkeyeva, Galina; Neshina, Y. G.; Sidorina, Ye. A.

doi:10.1166/jctn.2019.8130

Cited by 7 publications

(20 citation statements)

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“…Currently, quite a large amount of experimental data have been accumulated on the use of proton semiconductors and dielectrics (PSCD), mainly in the field of electrochemical technologies and physical chemistry (when developing solid-state electrolytes (perovskites, orthoperiodates and alkali metal biperiodates of alkali metals) [18][19][20][21][22][23][24][25]. At the same time, there are not many practical applications of PSCD properties [17,[26][27][28][29][30][31][32] in the field of theoretical electrical engineering [33][34][35][36][37][38][39][40][41], physical electronics and microelectronics [42].…”

Section: Scientific and Practical Significance Of The Study Resultsmentioning

confidence: 99%

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Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

et al. 2022

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This paper is devoted to the development of generalized (for a wide range of fields (100 kV/m–1000 MV/m) and temperatures (0–1500 K) in the radio frequency range (1 kHz–500 MHz)) methods for the theoretical investigation of the physical mechanism of nonlinear kinetic phenomena during the establishment of the relaxation polarization, due to the diffusion motion of the main charge carriers in dielectrics with ionic–molecular chemical bonds (hydrogen-bonded crystals (HBC), including layered silicates, crystalline hydrates and corundum–zirconium ceramics (CZC), etc.) in an electric field. The influence of the nonlinearities equations of the initial phenomenological model of dielectric relaxation (in HBC-proton relaxation) on the mechanism for the formation of volume–charge polarization in solid dielectrics is analyzed. The solutions for the nonlinear kinetic Fokker–Planck equation, together with the Poisson equation, for the model of blocked electrodes are built in an infinite approximation (including all orders k of smallness without dimensional parameters) of perturbation theory for an arbitrary order r of the frequency harmonic of an alternating external polarizing field. It has been established that the polarization nonlinearities in ion-molecular dielectrics, already detected at the fundamental frequency, are interpreted in the mathematical model (for the first time in this work) as interactions of the relaxation modes of the volume charge density calculated on different orders of spatial Fourier harmonics. At the fundamental frequency of the field, an analytical generalized expression is written for complex dielectric permittivity (CDP), which is expressed analytically in terms of special relaxation parameters, which are quite complex real functions in the fields of frequency and temperature. The theoretical CDP and the dielectric loss tangent spectra studied depend on the nature of the relaxation processes in the selected temperature range (Maxwell and diffusion relaxation; thermally activated and tunneling relaxation), which is relevant from the point of view of choosing exact calculation formulas when analyzing the optimal operating modes of functional elements (based on dielectrics and their composites) for circuits of instrumentation, radio engineering and power equipment in real industrial production.

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Section: Scientific and Practical Significance Of The Study Resultsmentioning

confidence: 99%

“…Theoretical developments aimed at applying quantum kinetic theory of proton conductivity and polarization [7,[12][13][14][15][16]29,30] to questions and quantum theory of hightemperature superconductivity [43] are relevant.…”

Section: Scientific and Practical Significance Of The Study Resultsmentioning

confidence: 99%

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

et al. 2022

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“…Theoretical studies of nonlinear kinetic phenomena during polarization of layered dielectrics of the HBC-class (crystal hydrates; layered silicates) were carried out in a wide range of field parameters and temperatures and indicate the manifestation of an anomalously high dielectric constant ((1.5-2.5) million) in the region of ultralow temperatures (1-10 K) in weak fields (100-1000 kV/m) and in the region of ultra-high temperatures (550-1500 K) in strong fields (10-100 MV/m) [72][73][74][75][76][77][78].…”

Section: Introductionmentioning

confidence: 99%

“…Note that, according to the results of numerous theoretical studies, for crystals with hydrogen bonds (HBC), in which hydrogen ions (protons) are the main relaxers, quantum tunneling continues to play a significant role in the formation of the crystal polarization not only in the low-temperature region (50-100 K), but also at sufficiently high temperatures (150-550 K) [72][73][74][75]78,81,[83][84][85][86][87], which requires a detailed study of the temperature dependences for various approximations when calculating the transparency coefficient of a potential barrier. Within the framework of this work, we, in particular, will study the behavior of the classical permeability of a potential barrier (describing thermally activated particle transfers) D classic term (T) = exp − U 0 k B T and tunneling quantum permeability (calculated for the model of continuous energy spectrum in the semiclassical approximation…”

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confidence: 99%

Physical and Mathematical Models of Quantum Dielectric Relaxation in Electrical and Optoelectric Elements Based on Hydrogen-Bonded Crystals

Kalytka,

Mekhtiyev,

Neshina

et al. 2023

Crystals

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The quantum statistical properties of the proton subsystem in hydrogen-bonded crystals (HBC) are investigated. Based on the non-stationary Liouville operator equation (taking into account a number of assumptions established in the experiment), a quantum kinetic equation is constructed for the ensemble of non-interacting protons (an ideal proton gas) moving in the crystal potential image perturbed by the external electric field. The balanced density matrix for the unperturbed proton subsystem is constructed using the quantum canonical Gibbs distribution, and the non-balanced density matrix is calculated from the solutions of the nonlinear quantum kinetic equation by methods in linear approximation of perturbation theory for the blocking electrode model. Full quantum mechanical averaging of the polarization operator makes it possible to study the theoretical frequency-temperature spectra of the complex dielectric permittivity (CDP) calculated using quantum relaxation parameters that differ significantly from their semiclassical counterparts. A scheme is presented for an analytical study of the dielectric loss tangent in the region of quantum nonlinear relaxation in HBC. The results obtained in the given paper are of scientific interest in developing the theoretical foundations of proton conduction processes in energy-independent memory elements (with anomalously high residual polarization) based on thin films of ferroelectric materials in the ultralow temperature range (1–10 K). The theoretical results obtained have a direct application to the study of the tunneling mechanisms of spontaneous polarization in ferroelectric HBC with a rectangular hysteresis loop, in particular in crystals of potassium dideutrophosphate (KDP), widely used in nonlinear optics and laser technology. The quantum properties of proton relaxation in HBC can be applied in the future to the study of solid-state electrolytes with high proton conductivity for hydrogen energy, capacitor technology (superionics, varicodes), and elements of MIS and MSM structures in the development of resonant tunnel diodes for microelectronics and computer technology.

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“…According to the mineral composition, the raw material is represented by kaolin, quartz, and feldspar impurities. The deposit is being developed and used to obtain enriched kaolin, quartz-kaolinite mixtures and quartz-feldspar concentrate [ [16], [17]].…”

Section: Introductionmentioning

confidence: 99%

Study of refractory raw materials of the Republic of Kazakhstan

Sidorina¹,

Isagulov²,

Rabatuly³

et al. 2022

KIMS/CUMR/MShKP

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Important aspects of increasing the competitiveness of domestic metallurgy and mechanical engineering are increasing the durability of thermal units and involving non-traditional, cheaper energy resources in production. One of these resources is carbon waste from the aluminum industry - electrode scrap and waste from the carbon lining of electrolyzers. The problem of their use as substitutes for solid fuels (coke coal) in the metallurgical, engineering and energy industries is fluorine- and alkali-containing salts that impregnate them, destroying the traditional lining of thermal units. The development of effective refractories resistant to fluorine- and alkali-containing corrodants (melts and gases) makes it possible to increase the competitiveness and efficiency of thermal units both through the use of cheaper energy carriers and by increasing the duration of their campaign. An important aspect is the simultaneous disposal of hazardous industrial waste and the reduction of the environmental burden on the ecosphere of the Republic of Kazakhstan. The basis for the development of new refractory materials resistant to fluorine- and alkali-containing corrodants is the analysis of the existing raw material base of the Republic of Kazakhstan and the choice of materials that make it possible to obtain aluminosilicate refractories with increased chemical resistance. In the work, the phase and chemical composition of refractory clays and kaolins of the Republic of Kazakhstan were studied, their rheological and thermophysical properties were investigated. Selected raw materials for the development of technology for the production of dense aluminosilicate refractory products.

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Methods of Theoretical Researches the Properties of Electrotechnical Materials Class of Dielectrics with Hydrogen Bonds

Cited by 7 publications

References 0 publications

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

Theoretical Studies of Nonlinear Relaxation Electrophysical Phenomena in Dielectrics with Ionic–Molecular Chemical Bonds in a Wide Range of Fields and Temperatures

Physical and Mathematical Models of Quantum Dielectric Relaxation in Electrical and Optoelectric Elements Based on Hydrogen-Bonded Crystals

Study of refractory raw materials of the Republic of Kazakhstan

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