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Journal articles on the topic 'Dielectric boundary'

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Published: 4 June 2021
Last updated: 31 January 2023

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1

Girault, H. H., and A. M. Kuznetsov. "Dielectric friction at the boundary between two dielectric media." Journal of Electroanalytical Chemistry 432, no. 1-2 (July 1997): 19–26. http://dx.doi.org/10.1016/s0022-0728(97)00135-6.

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2

Kawasaki, Masahiro, Tadanori Yoshioka, Shigeki Sato, Kazuto Watanabe, and Makoto Shiojiri. "Boundary Analysis Of SrTio3 Ceramic Condenser." Microscopy and Microanalysis 5, S2 (August 1999): 154–55. http://dx.doi.org/10.1017/s1431927600014094.

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SrTiO3-based semiconducting ceramics are widely used to electric devices such as dielectric condensers and varistors due to their properties of high dielectric constant, high dispersion frequency and small temperature dependence of the dielectric constant. The electric properties of these ceramic devices have been studied and found to be deeply influenced by the crystal growth mechanism, the grain boundary layer characteristics and the sintering atmosphere that is represented by such factors as oxygen partial pressure and processing temperature which relate to the atom vacancy formation. Atom vacancies, which play an important role to the electrical properties, have been detected by cathodoluminescence (CL) spectroscopy with scanning electron microscopy (SEM).A ceramic condenser (Sr0.94Ca0.05Ba0.01)0.99TiO3 was investigated by Hitomi el at: using transmission electron microscopy (TEM). The material is a boundary layer (BL) semiconducting ceramic condenser, having dielectric layers between semiconducting grains. The same condenser material was investigated in this report at the grain boundary region using high resolution (scanning) transmission electron microscope (TEMSTEM) capable of High Angle Annular Dark Field (HAADF) technique.
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3

Cheng, Li-Tien, Bo Li, Michael White, and Shenggao Zhou. "Motion of a Cylindrical Dielectric Boundary." SIAM Journal on Applied Mathematics 73, no. 1 (January 2013): 594–616. http://dx.doi.org/10.1137/120867986.

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4

Lu, Tao, and David O. Yevick. "Boundary element analysis of dielectric waveguides." Journal of the Optical Society of America A 19, no. 6 (June 1, 2002): 1197. http://dx.doi.org/10.1364/josaa.19.001197.

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5

Yu, Hong Tao, Wen Bo Zhang, Jing Song Liu, and Han Xing Liu. "Relaxation Behavior of Zr Substituted CaCu3Ti4O12 Ceramics." Materials Science Forum 687 (June 2011): 375–79. http://dx.doi.org/10.4028/www.scientific.net/msf.687.375.

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The dielectric properties of Zr substituted CaCu3Ti4O12ceramics have been investigated in detail. Grain size decreases with Zr content increasing. The hetero-electrical microstructures of prepared samples have been confirmed by the impedance spectra. The dielectric loss has been improved by Zr doping because of the enhancement of grain boundary resistivity. A Debye-like boundary relaxation behavior has been observed in the temperature range of 220-600K. As Zr content increases, the relaxation time increases due to the higher grain boundary concentration. This work has provided an additional proof for the origin of giant dielectric response in CaCu3Ti4O12ceramics.
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6

Senior, T. B. A. "Approximate boundary conditions for homogeneous dielectric bodies." Journal of Electromagnetic Waves and Applications 9, no. 10 (January 1, 1995): 1227–39. http://dx.doi.org/10.1163/156939395x00019.

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7

D. K. Giles and S. E. Law. "DIELECTRIC BOUNDARY EFFECTS ON ELECTROSTATIC CROP SPRAYING." Transactions of the ASAE 33, no. 1 (1990): 0002–7. http://dx.doi.org/10.13031/2013.31284.

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8

Im, S., and M. A. Cappelli. "Dielectric barrier discharge induced boundary layer suction." Applied Physics Letters 100, no. 26 (June 25, 2012): 264103. http://dx.doi.org/10.1063/1.4731288.

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9

Lai, Heather L., and Chin An Tan. "Modeling the constraint effects of compliant electrodes in dielectric elastomers under uniaxial loading." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 230, no. 15 (August 9, 2016): 2623–36. http://dx.doi.org/10.1177/0954406215602035.

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Dielectric elastomers are composite thin film structures composed of a dielectric polymer between compliant electrodes. Previous hyperelastic models have not modeled the constraint effects of compliant electrodes on the lateral contraction of the dielectric material as it stretches, and are therefore unable to fully describe the electromechanical behavior of the dielectric elastomer or provide a means to understand the constraint effects. An empirical boundary coefficient is introduced to model these constraint effects on the lateral boundaries of the material under uniaxial tension. Employing an averaged stretch ratio concept, it is shown that this coefficient can be obtained from experimentally measurable geometric variables. Values for the boundary coefficients of sample dielectric elastomer films were obtained from experiments performed on a uniaxial test stand. Incorporating the boundary coefficient into the model formulation, a specific hyperelastic stress–strain relation is derived to describe the electromechanical behavior of dielectric elastomers under combined uniaxial tension and electrical loading. Comparison of the experimental and predicted values of the induced force in the axial direction due to the Maxwell stress based on the uniaxial model shows favorable agreement.
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10

Bataineh, Mohammed H. "Plane Wave Visualisation on a Dielectric-Dielectric Interface." International Journal of Electrical Engineering & Education 40, no. 2 (April 2003): 112–22. http://dx.doi.org/10.7227/ijeee.40.2.2.

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In this paper, the behaviour of an arbitrarily polarised plane wave on a dielectric-dielectric interface is investigated. By imposing the appropriate boundary conditions the Fresnel transmission and reflection coefficients are derived. Using these coefficients various three dimensional as well as contour plots are produced using a MATLAB code in order to illustrate the refraction and the reflection usually encountered at an interface. Snell's law and the Brewster angle are discussed within the context of the analysis.
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11

Kumar, Ranjit, M. Zulfequar, and T. D. Senguttuvan. "Molecular Kinetic Based Dielectric Polarization in Sol-Gel Derived Nanocrystalline CaCu3Ti4O12." Advanced Materials Research 699 (May 2013): 387–91. http://dx.doi.org/10.4028/www.scientific.net/amr.699.387.

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Nano-sized powders of dielectric CaCu3Ti4O12 was synthesized by sol-gel reaction route. The powders are calcined at 700 °C and sintered at 1000 °C. The calcined powders diameter is in the range of 50 - 150 nm. Structural studies were carried out using the XRD, HRTEM and SEM. Frequency dependent dielectric properties were studied within the range of 20 Hz to 5 MHz. Molecular kinetics associated with dielectric relaxations is analyzed by Havriliak Negami function. It is found that the grain dipoles obey the Debye type of dielectric relaxation, while grain boundary dipoles follow the Cole-Cole type of dielectric relaxation. The observed grain and grain boundary dipole relaxation time are 6.598E-08 sec and 5.755E-04 sec, respectively.
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12

R, Keerthi, B. Mahanthesh, and Smita Saklesh Nagouda. "Rayleigh–Bénard convection in a non-Newtonian dielectric fluid with Maxwell–Cattaneo law under the effect of internal heat generation/consumption." Multidiscipline Modeling in Materials and Structures 16, no. 5 (April 17, 2020): 1175–88. http://dx.doi.org/10.1108/mmms-09-2019-0174.

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PurposeThe study of instability due to the effects of Maxwell–Cattaneo law and internal heat source/sink on Casson dielectric fluid horizontal layer is an open question. Therefore, in this paper, the impact of internal heat generation/absorption on Rayleigh–Bénard convection in a non-Newtonian dielectric fluid with Maxwell–Cattaneo heat flux is investigated. The horizontal layer of the fluid is cooled from the upper boundary, while an isothermal boundary condition is utilized at the lower boundary.Design/methodology/approachThe Casson fluid model is utilized to characterize the non-Newtonian fluid behavior. The horizontal layer of the fluid is cooled from the upper boundary, while an isothermal boundary condition is utilized at the lower boundary. The governing equations are non-dimensionalized using appropriate dimensionless variables and the subsequent equations are solved for the critical Rayleigh number using the normal mode technique (NMT).FindingsResults are presented for two different cases namely dielectric Newtonian fluid (DNF) and dielectric non-Newtonian Casson fluid (DNCF). The effects of Cattaneo number, Casson fluid parameter, heat source/sink parameter on critical Rayleigh number and wavenumber are analyzed in detail. It is found that the value Rayleigh number for non-Newtonian fluid is higher than that of Newtonian fluid; also the heat source aspect decreases the magnitude of the Rayleigh number.Originality/valueThe effect of Maxwell–Cattaneo heat flux and internal heat source/sink on Rayleigh-Bénard convection in Casson dielectric fluid is investigated for the first time.
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13

Kim, Sang Sub, Pyung Ho Choi, Do Hyun Baek, Jae Hyeong Lee, and Byoung Deog Choi. "Abnormal Threshold Voltage Shifts in P-Channel Low-Temperature Polycrystalline Silicon Thin Film Transistors Under Negative Bias Temperature Stress." Journal of Nanoscience and Nanotechnology 15, no. 10 (October 1, 2015): 7555–58. http://dx.doi.org/10.1166/jnn.2015.11167.

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In this research, we have investigated the instability of P-channel low-temperature polycrystalline silicon (poly-Si) thin-film transistors (LTPS TFTs) with double-layer SiO2/SiNX dielectrics. A negative gate bias temperature instability (NBTI) stress was applied and a turn-around behavior phenomenon was observed in the Threshold Voltage Shift (Vth). A positive threshold voltage shift occurs in the first stage, resulting from the negative charge trapping at the SiNX/SiO2 dielectric interface being dominant over the positive charge trapping at dielectric/Poly-Si interface. Following a stress time of 7000 s, the Vth switches to the negative voltage direction, which is “turn-around” behavior. In the second stage, the Vth moves from −1.63 V to −2 V, overwhelming the NBTI effect that results in the trapping of positive charges at the dielectric/Poly-Si interface states and generating grain-boundary trap states and oxide traps.
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14

Cao, Guanghan, Lixin Feng, and Cao Wang. "Grain-boundary and subgrain-boundary effects on the dielectric properties of CaCu3Ti4O12ceramics." Journal of Physics D: Applied Physics 40, no. 9 (April 19, 2007): 2899–905. http://dx.doi.org/10.1088/0022-3727/40/9/035.

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15

HUDAK, MATEJ, and ONDREJ HUDAK. "DYNAMIC SUSCEPTIBILITY IN A PARAELECTRIC PHASE IN A SMALL PARTICLE, BOUNDARY EFFECTS." International Journal of Modern Physics B 27, no. 09 (April 10, 2013): 1350015. http://dx.doi.org/10.1142/s021797921350015x.

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The dielectric dynamic susceptibility of a particle is studied numerically using the exact susceptibility expression in other to understand particle physical properties. There exist one peak in the imaginary part and two peaks in the real part of the susceptibility. Constant behavior of peaks width and height is found in the imaginary and real part of the susceptibility going from the center. A decrease of peaks to zero is an effect of boundary. Our results are in contrast with behavior of susceptibility behavior found variationally where there is no constant behavior of the susceptibility peaks changing r. These results are new in literature of dielectrics.
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16

Bao, Yizheng, Xuefeng Chen, Shiguang Yan, Fei Cao, Xianlin Dong, and Genshui Wang. "The phase structure and dielectric properties around a new type of phase boundary in a lead ytterbium niobite based solid solution." Dalton Transactions 48, no. 47 (2019): 17644–54. http://dx.doi.org/10.1039/c9dt04012a.

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17

Tewari, H. S., and P. K. Sakharkar. "Dielectric characterization of the system Sr1-xGdxTi1-xCoxO3 (x = 0.10) using impedance spectroscopy." Material Science Research India 7, no. 2 (February 8, 2010): 499–504. http://dx.doi.org/10.13005/msri/070223.

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The structure of ceramic grain boundaries, boundary composition, the boundary charge and associated space charge controls the dielectric and electrical behavior of ceramics. Various methods were researched and applied to increase the dielectric constant by formation of insulating layers between semi-conducting grains. In this communication, we are reporting the effect of cooling rates from sintering temperature to room temperature on dielectric properties of the resulting ceramics in the system, Sr1-xGdxTi1-xCoxO3 with x = 0.10. All the samples in this system were prepared by conventional high temperature solid state reaction method. The samples were cooled at different cooling rates from sintering temperature to room temperature. The capacitance and dielectric loss were measured as a function of frequency and temperature using HP 4192A LF impedance analyzer. The samples cooled from different cooling rates from sintering temperature show interesting dielectric properties due to formation of insulating layers between grains. The impedance spectroscopy is used successfully in explaining the dielectric properties of these materials.
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18

Livernois, Thomas G., and Dennis P. Nyquist. "Integral-equation formulation for scattering by dielectric discontinuities along open-boundary dielectric waveguides." Journal of the Optical Society of America A 4, no. 7 (July 1, 1987): 1289. http://dx.doi.org/10.1364/josaa.4.001289.

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19

Kashir, Alireza, Mehrdad Ghiasabadi Farahani, and Hyunsang Hwang. "Towards an ideal high-κ HfO2–ZrO2-based dielectric." Nanoscale 13, no. 32 (2021): 13631–40. http://dx.doi.org/10.1039/d1nr02272e.

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Dielectric properties are improved by fabrication of a Ferroelectric Hf0.5Zr0.5O2/Antiferroelectric ZrO2 nanolaminate structure. The new design increases the density of morphotropic phase boundary, which consequently enhances the dielectric constant.
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20

Fu, Desheng, Yosuke Arima, Hiroki Taniguchi, Tomoyasu Taniyama, Mitsuru Itoh, Jianding Yu, and Shin-Ya Koshihara. "Conductive Boundary Layer in CaCu3Ti4O12with Giant-Dielectric-Response." Ferroelectrics 347, no. 1 (March 20, 2007): 140–44. http://dx.doi.org/10.1080/00150190601187500.

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21

Huang, C. L., and D. P. Butler. "Dielectric waveguide resonator with a superconductive boundary layer." IEEE Transactions on Magnetics 27, no. 2 (March 1991): 1272–75. http://dx.doi.org/10.1109/20.133416.

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22

Collin, R. E., and D. A. Ksienski. "Boundary element method for dielectric resonators and waveguides." Radio Science 22, no. 7 (December 1987): 1155–67. http://dx.doi.org/10.1029/rs022i007p01155.

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23

Kryszewski, M., and G. W. Balk. "Characterization of Boundary Phenomena Using Broadband Dielectric Spectroscopy." Journal of Adhesion 64, no. 1-4 (August 1997): 181–201. http://dx.doi.org/10.1080/00218469708010539.

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24

Tjong, Harianto, and Huan-Xiang Zhou. "On the Dielectric Boundary in Poisson−Boltzmann Calculations." Journal of Chemical Theory and Computation 4, no. 3 (February 21, 2008): 507–14. http://dx.doi.org/10.1021/ct700319x.

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25

Koshiba, Masanori, and Michio Suzuki. "Boundary-element analysis of dielectric slab waveguide discontinuities." Applied Optics 25, no. 6 (March 15, 1986): 828. http://dx.doi.org/10.1364/ao.25.000828.

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26

Wiersig, Jan. "Boundary element method for resonances in dielectric microcavities." Journal of Optics A: Pure and Applied Optics 5, no. 1 (December 13, 2002): 53–60. http://dx.doi.org/10.1088/1464-4258/5/1/308.

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27

Kotb, Hicham Mahfoz, Mohamad Mahmoud Ahmad, Sajid Ali Ansari, Tarek S. Kayed, and Adil Alshoaibi. "Dielectric Properties of Colossal-Dielectric-Constant Na1/2La1/2Cu3Ti4O12 Ceramics Prepared by Spark Plasma Sintering." Molecules 27, no. 3 (January 25, 2022): 779. http://dx.doi.org/10.3390/molecules27030779.

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In the current study, we report on the dielectric behavior of colossal-dielectric-constant Na1/2La1/2Cu3Ti4O12 (NLCTO) ceramics prepared by mechanochemical synthesis and spark plasma sintering (SPS) at 850 °C, 900 °C, and 925 °C for 10 min. X-ray powder diffraction analysis showed that all the ceramics have a cubic phase. Scanning electron microscope observations revealed an increase in the average grain size from 175 to 300 nm with an increase in the sintering temperature. SPS NLCTO ceramics showed a room-temperature colossal dielectric constant (>103) and a comparatively high dielectric loss (>0.1) over most of the studied frequency range (1 Hz–40 MHz). Two relaxation peaks were observed in the spectra of the electrical modulus and attributed to the response of grain and grain boundary. According to the Nyquist plots of complex impedance, the SPS NLCTO ceramics have semiconductor grains surrounded by electrically resistive grain boundaries. The colossal dielectric constant of SPS NLCTO ceramics was attributed to the internal barrier layer capacitance (IBLC) effect. The high dielectric loss is thought to be due to the low resistivity of the grain boundary of SPS NLCTO.
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28

Alekseev, Gennady V., and Aleksey Lobanov. "Optimization Method in 2-D Problems of Material Body Cloaking." Applied Mechanics and Materials 756 (April 2015): 436–41. http://dx.doi.org/10.4028/www.scientific.net/amm.756.436.

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We consider the control problem for two-dimensional model of the electromagnetic field which describes the scattering E-polarized electromagnetic waves in an infinite homogeneous medium containing permeable dielectric obstacle with a partially covered (for masking) boundary. The role of control function is played by surface conductivity entering the impedance boundary condition on the covered part of the boundary and the index of refraction of the dielectric obstacle. We prove the solvability of the control problem, derive the optimality system which describes the necessary conditions of an extremum and develop an efficient numerical algorithm for the solution of the control problem.
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29

Yu, Yunfei, Qun Wang, Yongqing Li, Mehtab Ur Rehman, and Waheed Qamar Khan. "Sr and Zr Co-Doped CaCu3Ti4O12 Ceramics with Improved Dielectric Properties." Materials 15, no. 12 (June 15, 2022): 4243. http://dx.doi.org/10.3390/ma15124243.

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The dielectric constant of CCTO materials can be as high as 104, which makes it suitable for use in electronic devices but the high dielectric loss limits its application. In this paper, a series of Sr and Zr co-doped CCTO ceramics having the formula Ca0.8Sr0.2Cu3Ti4−xZrxO12 (x = 0.1, 0.2, 0.3, 0.4) were obtained via a solid-state reaction technique. We force the effect of the Zr content on the phase composition, microstructure, cationic valence states, impedance, and dielectric properties of the as-prepared ceramics to reduce dielectric loss. The results demonstrate that Sr and Zr co-doping increases dielectric constant and reduces dielectric loss simultaneously, and the maximum dielectric constant (1.87 × 105, 1 Hz) and minimum dielectric loss (0.43, 102 Hz) are obtained when x = 0.3. Mixed Cu+/Cu2+ and Ti3+/Ti4+ valence states are observed to coexist in the co-doped material lattices, which promote dipole polarization, and thereby increase the dielectric constant of the ceramics. The dielectric properties of the materials are analyzed according to the internal barrier layer capacitance model, which elucidates the contributions of the grains and grain boundaries to dielectric performance. The maximum grain boundary resistance (3.7 × 105 Ω) is obtained for x = 0.3, which contributes toward the minimum dielectric loss (0.43) obtained for this ceramic at a frequency less than 1 kHz. The average grain sizes of the samples decrease with increasing Zr content, which is the primary factor increasing the grain boundary resistance of the co-doped ceramics.
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30

Divakov, Dmitriy V., Alexandre A. Egorov, Konstantin P. Lovetskiy, Leonid A. Sevastianov, and Andrey S. Drevitskiy. "Leaky waves in planar dielectric waveguide." Discrete and Continuous Models and Applied Computational Science 27, no. 4 (December 15, 2019): 325–42. http://dx.doi.org/10.22363/2658-4670-2019-27-4-325-342.

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A new analytical and numerical solution of the electrodynamic waveguide problem for leaky modes of a planar dielectric symmetric waveguide is proposed. The conditions of leaky modes, corresponding to the Gamow-Siegert model, were used as asymptotic boundary conditions. The resulting initial-boundary problem allows the separation of variables. The emerging problem of the eigen-modes of open three-layer waveguides is formulated as the Sturm-Liouville problem with the corresponding boundary and asymptotic conditions. In the case of guided and radiation modes, the Sturm-Liouville problem is self-adjoint and the corresponding eigenvalues are real quantities for dielectric media. The search for eigenvalues and eigenfunctions corresponding to the leaky modes involves a number of difficulties: the problem for leaky modes is not self-adjoint, so the eigenvalues are complex quantities. The problem of finding eigenvalues and eigenfunctions is associated with finding the complex roots of the nonlinear dispersion equation. To solve this problem, we used the method of minimizing the zero order. An analysis of the calculated distributions of the electric field strength of the first three leaky modes is given, showing the possibilities and advantages of our approach to the study of leaky modes.
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31

Wada, Satoshi, Momoyo Nitta, Nobuhiro Kumada, Daisuke Tanaka, Masahito Furakawa, Chikako Moriyoshi, and Yoshihiro Kuroiwa. "Phase Diagram and Microstructure Analysis of Barium Titanate – Potassium Niobate System Piezoelectric Ceramics." Key Engineering Materials 421-422 (December 2009): 34–37. http://dx.doi.org/10.4028/www.scientific.net/kem.421-422.34.

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Barium titanate (BaTiO3, BT) and potassium niobate (KNbO3, KN) ceramics were prepared by normal sintering process. Phase diagram of BT-KN system was investigated using high-temperature XRD and dielectric measurement, and two phases coexistence between tetragonal and orthorhombic was observed at room temperature. Transmission electron microscope (TEM) observation confirmed that the microstructure of the ceramics with KN contents below 30 molar% was composed of only tetragonal BT-rich grain, while those with KN contents above 40 molar% were composed of two kinds of grains, i.e., tetragonal BT-rich and orthorhombic KN-rich grains. Phase boundary between two phases for BT-KN ceramics was grain boundary. Thus, we named two phases coexistence region for BT-KN ceramics “wide-band morphotropic phase boundary (MPB)”. Finally, dielectric and piezoelectric properties were investigated, and both dielectric and apparent d33 maximum were observed at the 0.5BT-0.5KN ceramics.
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32

Bouzid, Abderrazak, and Gilbert Fantozzi. "Mechanical and Dielectrical Energy Dissipation Phenomena Study in Lead Zirconate Titanate Piezoelectric Materials." Advanced Materials Research 895 (February 2014): 274–79. http://dx.doi.org/10.4028/www.scientific.net/amr.895.274.

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The aim of the present work is to show the analogy between mechanical and dielectric dissipation phenomena occurring in the PZT near the morphotropic phase boundary MPB-. Mechanical dissipations are investigated by internal friction mechanical losses and associated modulus-as function of temperature at medium and low frequencies. Dielectric dissipations are investigated by dielectric spectroscopy at medium frequencies.
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33

Nyamsuren, Ochirbat, Purevdorj Munkhbaatar, Duger Ulam-Orgikh, Jav Davaasambuu, and G. Ochirbat. "TM Standing Wave Solution of Maxwell Equations in a Self-Defocusing Kerr Media and its Application to a Thin-Film Waveguide." Solid State Phenomena 323 (August 30, 2021): 100–112. http://dx.doi.org/10.4028/www.scientific.net/ssp.323.100.

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We applied the dielectric function method to solve analytically L-NL-L structure problems with negative Kerr nonlinearity. A damped wave in linear and a periodic standing wave in non-linear media had to be matched at boundaries. We gave a formulation of boundary conditions that did not explicitly include a film thickness. The boundary-value of a dielectric function can be expressed through the constant of non-trivial integral of motion. Using it, one generates a family of matched solutions satisfying boundary conditions. Then arbitrary film thickness can be checked against this family of solutions in search of matches. As a result, all fitted solutions are determined straightforwardly.
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34

Pang, Xiaodong, and Huan-Xiang Zhou. "Poisson-Boltzmann Calculations: van der Waals or Molecular Surface?" Communications in Computational Physics 13, no. 1 (January 2013): 1–12. http://dx.doi.org/10.4208/cicp.270711.140911s.

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AbstractThe Poisson-Boltzmann equation is widely used for modeling the electro-statics of biomolecules, but the calculation results are sensitive to the choice of the boundary between the low solute dielectric and the high solvent dielectric. The default choice for the dielectric boundary has been the molecular surface, but the use of the van der Waals surface has also been advocated. Here we review recent studies in which the two choices are tested against experimental results and explicit-solvent calculations. The assignment of the solvent high dielectric constant to interstitial voids in the solute is often used as a criticism against the van der Waals surface. However, this assignment may not be as unrealistic as previously thought, since hydrogen exchange and other NMR experiments have firmly established that all interior parts of proteins are transiently accessible to the solvent.
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35

BYCHKOV, V. V., and L. STENFLO. "A nonlinear equation for electron surface waves at a plasma boundary." Journal of Plasma Physics 60, no. 4 (November 1998): 833–44. http://dx.doi.org/10.1017/s0022377898007053.

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A nonlinear equation for electrostatic electron surface waves at the boundary between a cold plasma and a dielectric is derived. Our analysis of this equation shows that the nonlinear disturbances at the plasma–dielectric interface may take the form of periodic travelling waves or standing waves with oscillating amplitudes. While the travelling waves are always periodic in space, the standing waves can be both periodic and localized.
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36

Červeňová, Jozefa, Rastislav Dosoudil, Jaroslav Franek, and L’ubomír Šumichrast. "On the total internal reflection frustrated by a dielectric slab: Goos-Hänchen shift and deformation of the beam-wave profile." Journal of Electrical Engineering 70, no. 2 (April 1, 2019): 83–92. http://dx.doi.org/10.2478/jee-2019-0014.

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Abstract The total internal reflection of a beam wave on planar dielectric boundary in presence of a nearby dielectric slab is thoroughly investigated together with its influence on the Goos-Hänchen shift and on the beam-wave-profile deformation.
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37

Li, Zhenrong, Liangying Zhang, and Xi Yao. "Dielectric properties anomaly of (1−x)Pb(Ni1/3Nb2/3)O3−xPbTiO3 ceramics near the morphotropic phase boundary." Journal of Materials Research 16, no. 3 (March 2001): 834–36. http://dx.doi.org/10.1557/jmr.2001.0100.

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Dielectric properties and the phase compositions of (1−x)Pb(Ni1/3Nb2/3)O3−xPbTiO3 ceramics were investigated. A morphotropic phase boundary (MPB) in the system between pseudocubic and tetragonal phase regions has been identified to lie in the composition range x = 0.34–0.38 by means of x-ray diffraction and dielectric measurements. The samples of composition lying near the MPB have good dielectric properties, but at the same time, exhibit two dielectric peaks. The possible reasons for the occurrence of dielectric bipeaks are discussed. One dielectric peak is phase transition peak, and the other peak lying in 130–150 °C temperature range is suggested to result from structure defects in the ceramics.
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38

NIIMI, Takuya, Shouhei KIDERA, and Tetsuo KIRIMOTO. "Dielectric Constant and Boundary Extraction Method for Double-Layered Dielectric Object for UWB Radars." IEICE Transactions on Electronics E98.C, no. 12 (2015): 1134–42. http://dx.doi.org/10.1587/transele.e98.c.1134.

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39

Zeng, Jiecheng, Tusheng He, and Yang Liu. "Microstructure and electric response of Li,Sn co-doped NiO ceramics." Processing and Application of Ceramics 13, no. 1 (2019): 44–50. http://dx.doi.org/10.2298/pac1901044z.

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Phase composition, microstructure and electric response of Li0.05SnxNi0.95 - xO (x = 0, 0.025, 0.05, 0.1) ceramics were systematically investigated. Colossal dielectric permittivity (>5000) is observed in the frequency range of 102-105 Hz at room temperature which becomes highly frequency-independent with increasing temperature. Secondary Sn-rich phase is detected in the grain boundary regions and it has a remarkable influence on the dielectric properties. Impedance spectroscopy analysis demonstrates that the microstructure is electrically heterogeneous, consisting of semiconducting grain and insulating grain boundary. Defect dipoles or polyvalent cations induced at high temperature may activate an electron hopping process under electric field, resulting in the enhancements of grain conductivity and polarization effect. This behaviour should be considered as the origin of the observed dielectric response.
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40

Zhou, Guo Yuan, Jin Song Pan, and Xiao Wen Zhang. "Electrical Properties of (1–x)(0.8PMN-0.2PNN)-xPT Ceramics near the Morphotropic Phase Boundary." Key Engineering Materials 336-338 (April 2007): 18–20. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.18.

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Ferroelectric ceramics of (1x)(0.8PMN0.2PNN)xPT (x = 0.280.43) were synthesized by the columbite precursor method. Their phase structures as well as the dielectric, ferroelectric and piezoelectric properties were investigated. X-ray diffraction (XRD) results demonstrate that the morphotropic phase boundary (MPB) of this system lies in the composition range of x = 0.31–0.37. Examination of the dielectric behavior indicates that the ceramics exhibit high dielectric constants near the MPB compositions. In addition, the piezoelectric properties of the ceramics were found quite well around the MPB. The interrelated mechanism was also discussed.
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41

Kurilkina, S., V. Belyi, and N. Kazak. "Surface Plasmon-Polaritons at the Interface of Magnetoelectric Hyperbolic Metamaterial." Nonlinear Phenomena in Complex Systems 23, no. 3 (October 28, 2020): 327–31. http://dx.doi.org/10.33581/1561-4085-2020-23-3-327-331.

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In this paper, we investigated the features of plasmon-polaritons excited at the interface of a magnetoelectric hyperbolic metamaterial and a dielectric for the case when the optical axis is arbitrary oriented under the normal to the boundary. Expressions are obtained for the complex electric and magnetic vectors as well as for the decay constants of the fields on both sides of the interface. The possibility is shown and the conditions are determined for localization of plasmon-polariton at the boundary of metamaterial of different types. It is shown that the wave vector of plasmon-polariton has the component oriented perpendicular to the boundary. It is established that for metamaterials of different types changing the orientation of the optical axis one can realize the conditions when the phase velocity of plasmon-polariton is directed from the boundary inside a metamaterial or a dielectric.
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42

Gaisina (Mukhamedyarova), Guzal A., and Ayrat D. Galimbekov. "Investigation of the dielectric parameters of nematic liquid crystals in the boundary layers." Butlerov Communications 61, no. 3 (March 31, 2020): 43–48. http://dx.doi.org/10.37952/roi-jbc-01/20-61-3-43.

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This article presents the results of a study of the dielectric properties of thin liquid crystal layer systems. To study the dielectric parameters of nematic liquid crystals in the boundary layers, the frequency and temperature dependences of the real (ε') and imaginary (ε'') parts of the dielectric constant were determined. We studied samples that are in macroscopic layers and samples located in flat capillary layers (d ~ 0.1 μm). In both cases, the measurement is performed by the same method, namely, the method of temporary dielectric spectroscopy. The entire procedure for measuring, recording, accumulating and processing data was carried out automatically. In this case, the results of dielectric measurements could be presented both in the frequency and time domains. For measurements, a plane-parallel measuring cell made of brass and titanium electrodes was used. It should be noted that the surface of a solid body has a strong influence on the phase state of liquids and liquid crystals in the boundary layer. For example, in such a layer, liquid molecules acquire a mesophase ordering. In the case of NLC, the nematic potential increases and, as a result, the temperature of the nematic-isotropic phase transition increases. However, a shift in the bleaching temperature in the NLC mixture studied by us did not appear due to the smallness of the effect. The substance enclosed in the microspace between the surfaces of the mica has a higher dielectric constant than the corresponding bulk sample. Moreover, such a difference is observed both in the isotropic and in the nematic phases. This can be explained as follows. In a thick layer, a dipole-dipole intermolecular interaction takes place, which reduces the effective dipole moment of the molecules.
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43

Hammer, Hanno. "Orthogonality relations for triple modes at dielectric boundary surfaces." Journal of Modern Optics 50, no. 2 (January 2003): 207–25. http://dx.doi.org/10.1080/09500340308235171.

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44

Sun, Guang-Yu, Yuan Li, Shu Zhang, Bai-Peng Song, Hai-Bao Mu, Bao-Hong Guo, An-Bang Sun, and Guan-Jun Zhang. "Integrated modeling of plasma-dielectric interaction: kinetic boundary effects." Plasma Sources Science and Technology 28, no. 5 (May 1, 2019): 055001. http://dx.doi.org/10.1088/1361-6595/ab17a3.

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45

Kim, Byeong Kon, Hyung Sub Lee, Jung Won Lee, Seung Eun Lee, and Yong Soo Cho. "Dielectric and Grain-Boundary Characteristics of Hot Pressed CaCu3Ti4O12." Journal of the American Ceramic Society 93, no. 9 (April 15, 2010): 2419–22. http://dx.doi.org/10.1111/j.1551-2916.2010.03738.x.

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46

Kharf, Kamran Akbari, Saeid Nikmehr, and Shahram Hosseinzadeh. "Plasmonic wave propagation along a magnetized plasmon–dielectric boundary." Optik 125, no. 10 (May 2014): 2302–7. http://dx.doi.org/10.1016/j.ijleo.2013.10.112.

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47

Zang, Guozhong, Jialiang Zhang, Peng Zheng, Jinfeng Wang, and Chunlei Wang. "Grain boundary effect on the dielectric properties of CaCu3Ti4O12ceramics." Journal of Physics D: Applied Physics 38, no. 11 (May 20, 2005): 1824–27. http://dx.doi.org/10.1088/0022-3727/38/11/022.

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48

Chen, Feiwu, and Daniel M. Chipman. "Boundary element methods for dielectric cavity construction and integration." Journal of Chemical Physics 119, no. 19 (November 15, 2003): 10289–97. http://dx.doi.org/10.1063/1.1615232.

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49

Beletskii, N. N., E. A. Gasan, and V. M. Yakovenko. "Surface electrostatic oscillations at a magnetized semiconductor-dielectric boundary." Radiophysics and Quantum Electronics 30, no. 3 (March 1987): 335–40. http://dx.doi.org/10.1007/bf01033966.

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50

Sokolov, V. G., D. D. Zhdanov, I. S. Potemin, A. A. Garbul, A. G. Voloboy, V. A. Galaktionov, and N. Kirilov. "Reconstruction of scattering properties of rough air-dielectric boundary." Optical Review 23, no. 5 (August 4, 2016): 834–41. http://dx.doi.org/10.1007/s10043-016-0250-6.

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