Relevant bibliographies by topics / Colossal equivalent relative permittivity

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Colossal equivalent relative permittivity'

Author: Grafiati
Published: 25 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Colossal equivalent relative permittivity"

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Dong, Wen, Wanbiao Hu, Terry J. Frankcombe, et al. "Colossal permittivity with ultralow dielectric loss in In + Ta co-doped rutile TiO2." Journal of Materials Chemistry A 5, no. 11 (2017): 5436–41. http://dx.doi.org/10.1039/c6ta08337d.

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Electron-pinned defect dipoles, in the form of highly stable triangle-diamond and/or triangle-linear dopant defect clusters with well defined relative positions for Ti reduction, are present in rutile In + Ta co-doped TiO<sub>2</sub> for the colossal permittivity and low loss.
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Kotb, Hicham Mahfoz, Adil Alshoaibi, Javed Mazher, Nagih M. Shaalan, and Mohamad M. Ahmad. "Colossal Permittivity Characteristics of (Nb, Si) Co-Doped TiO2 Ceramics." Materials 15, no. 13 (2022): 4701. http://dx.doi.org/10.3390/ma15134701.

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(Nb5+, Si4+) co-doped TiO2 (NSTO) ceramics with the compositions (Nb0.5Si0.5)xTi1−xO2, x = 0, 0.025, 0.050 and 0.1 were prepared with a solid-state reaction technique. X-ray diffraction (XRD) patterns and Raman spectra confirmed that the tetragonal rutile is the main phase in all the ceramics. Additionally, XRD revealed the presence of a secondary phase of SiO2 in the co-doped ceramics. Impedance spectroscopy analysis showed two contributions, which correspond to the responses of grain and grain-boundary. All the (Nb, Si) co-doped TiO2 showed improved dielectric performance in the high frequen
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He, Jiayang, Yanwei Huang, Guang Feng, Si Shen, Ming Yan, and Heping Zeng. "Rapid Laser Reactive Sintering Synthesis of Colossal Dielectric CCTO Ceramics." Applied Sciences 10, no. 10 (2020): 3510. http://dx.doi.org/10.3390/app10103510.

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Calcium copper titanate (CCTO) ceramics were successfully synthesized using a rapid laser reactive sintering method without conventional long heat treatment times. The microstructure, dielectric properties, and impedance spectroscopy results for CCTO sintered at laser power rates of 25–85 W were investigated in detail. The X-ray diffractometry results showed that prepared CCTO is polycrystalline in a cubic structure with high purity. Scanning electron microscopy showed that CCTO sintered at 85 W has a dense microstructure with an average grain size of 30 nm. The dielectric permittivity of CCTO
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Giannoukos, Georgios, Mart Min, and Toomas Rang. "Relative complex permittivity and its dependence on frequency." World Journal of Engineering 14, no. 6 (2017): 532–37. http://dx.doi.org/10.1108/wje-01-2017-0007.

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Purpose This paper aims to give a brief overview of dielectric properties, relative complex permittivity and its dependence on frequency. The significance of different approaches to complex permittivity is also discussed. Design/methodology/approach The different mechanisms of polarization are then presented. Dielectric measurements are given, and an RC parallel-equivalent circuit is used to simulate a parallel plate capacitor, and the way in which the impedance of the circuits is affected by frequency is illustrated in their respective diagrams. The way in which dielectric properties change w
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Mahfoz Kotb, H., Osama Saber, and Mohamad M. Ahmad. "Colossal relative permittivity and low dielectric loss in BaFe0.5Nb0.5O3 ceramics prepared by spark plasma sintering." Results in Physics 19 (December 2020): 103607. http://dx.doi.org/10.1016/j.rinp.2020.103607.

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Verma, A. K., Y. K. Awasthi, and Himanshu Singh. "Equivalent isotropic relative permittivity of microstrip on multilayer anisotropic substrate." International Journal of Electronics 96, no. 8 (2009): 865–75. http://dx.doi.org/10.1080/00207210902851480.

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Jurn, Yaseen Naser, Fareq Malek, Sawsen Abdulahadi Mahmood, Wei Wen Liu, Makram A. Fakhri, and Muataz Hameed Salih. "Modelling and Simulation of Rectangular Bundle of Single-Walled Carbon Nanotubes for Antenna Applications." Key Engineering Materials 701 (July 2016): 57–66. http://dx.doi.org/10.4028/www.scientific.net/kem.701.57.

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This paper aims to present an effective electromagnetic (EM) modelling approach for rectangular bundle of single-walled carbon nanotubes (RB-SWCNTs), based on the electrical conductivity, relative complex permittivity and linear distribution impedance by applying General Ohm’s law for this bundle. The equivalent single conductor material (ESCM) model for personification the RB-SWCNTs is present in this paper. The main target of this modeling approach is to estimate and investigate the EM properties of RB-SWCNTs using common EM engineering tool solver CST (MWS). For this purpose, the RB-SWCNTs
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Wang, Ge, Hui Pan, Shimiao Lai, et al. "Dynamic Measurement of Relative Complex Permittivity of Microwave Plasma at Atmospheric Pressure." Processes 9, no. 10 (2021): 1812. http://dx.doi.org/10.3390/pr9101812.

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Complex permittivity is one of the most important parameters to characterize the interaction between microwave and medium, especially for microwave-excited plasma. It is convenient to study plasma’s dielectric properties and microwave propagation characteristics by measuring its complex permittivity. A dynamic measurement method of equivalent relative complex permittivity of microwave-excited plasma at atmospheric pressure is proposed in this paper. Firstly, a cavity based on WR-430 at a frequency of 2.45 GHz was specially designed in COMSOL. Then, the samples with different real parts of comp
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Bellucci, Stefano, Antonio Maffucci, Sergey Maksimenko, et al. "Electrical Permittivity and Conductivity of a Graphene Nanoplatelet Contact in the Microwave Range." Materials 11, no. 12 (2018): 2519. http://dx.doi.org/10.3390/ma11122519.

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This paper investigates the electrical properties in the microwave range of a contact made by graphene nanoplatelets. The final goal is that of estimating the range of values for the equivalent electrical complex permittivity of a contact obtained by integrating low-cost graphene in the form of nanoplatelets (GNPs) into a high-frequency electrical circuit. To this end, a microstrip-like circuit is designed and realized, where the graphene nanoplatelets are self-assembled into a gap between two copper electrodes. An experimental characterization is carried out, both to study the structural prop
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Pacini, Alex, Alessandra Costanzo, and Diego Masotti. "A theoretical and numerical approach for selecting miniaturized antenna topologies on magneto-dielectric substrates." International Journal of Microwave and Wireless Technologies 7, no. 3-4 (2015): 369–77. http://dx.doi.org/10.1017/s1759078715000859.

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An increasing interest is arising in developing miniaturized antennas in the microwave range. However, even when the adopted antennas dimensions are small compared with the wavelength, radiation performances have to be preserved to keep the system-operating conditions. For this purpose, magneto-dielectric materials are currently exploited as promising substrates, which allows us to reduce antenna dimensions by exploiting both relative permittivity and permeability. In this paper, we address generic antennas in resonant conditions and we develop a general theoretical approach, not based on simp
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Dissertations / Theses on the topic "Colossal equivalent relative permittivity"

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Coutinho, Sofia de Sousa. "Étude et analyse des propriétés fondamentales du dititanate de rubidium Rb2Ti2O5 pour des applications de stockage d’énergie." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS087.

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Un système memristif est un composant dont la valeur de la résistance est fonction de tout l’historique électrique, soit des charges ou du flux qui l’a traversé. Cette propriété peut être employée pour le stockage de l’information et dans certaines conditions de l’énergie. Or, le dititanate de rubidium (RTO) présente des propriétés memristives et de stockage intrinsèques. Cette thèse a pour objet l’étude et l’analyse des propriétés fondamentales du RTO pour des applications de stockage d’énergie. L’étude fondamentale a été conduite par l’intermédiaire d’expériences de résonance magnétique nucl
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Kader, Ammar. "Caractérisation et modélisation électromagnétique de multimatériaux composites : application aux structures automobiles." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0056.

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Ce manuscrit se focalise sur l’effet de divers matériaux composites sur les différentes problématiques de compatibilité électromagnétique dans un véhicule automobile. Les modèles surfaciques des matériaux diélectriques sont validés en confrontant des résultats de mesures et de simulation de leurs permittivités. Ceux des matériaux conducteurs le sont en confrontant le modèle d’impédance de surface à un modèle filaire et en effectuant des mesures des simulations de paramètres S sur une structure majoritairement constituée par un matériau de ce type. Dans les deux cas, la technique de modélisatio
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Fialka, Jiří. "Měření parametrů piezoelektrických materiálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217770.

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The master’s thesis deals with the piezoelectric coefficients, the resonance frequency and especially the piezoelectric constants verification. With the assistance of several devices, for instance LCR-meter HIOKI 3532, impedance analyzer Agilent 4294A and LCR-meter Agilent E4980A, the resonance and the anti-resonance frequencies as well as impedance and capacitance of samples are measured. The paper opens with the theory of the piezoelectric phenomenon and the difference between direct and indirect piezoelectric phenomenon, it also describes the basic behaviour of a piezoelectric ceramic eleme
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Book chapters on the topic "Colossal equivalent relative permittivity"

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Aghoutane, Bilal, Mohammed El Ghazaoui, Hanan El Faylali, and Hassan Qjidaa. "Analyzing the Performance of a 5G Silo Slotted Dual-Band Antenna Using an Equivalent Circuit Model." In Advances in Computational Intelligence and Robotics. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-3775-2.ch020.

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This study describes a dual-band patch antenna that operates at 28 and 38 giga-hertz, which is suitable for use in 5G networks. The antenna features circular and rectangular slotted structures that are used to modify its radiation pattern and impedance matching characteristics. The proposed antenna is designed on a Roger 5058 substrate with a thickness of 0.38 mm, a relative permittivity of 2.2, and a low loss tangent of 0.0009. The slotted structures create additional resonances that operate at the desired frequencies, increasing the antenna's bandwidth and enabling it to operate at two frequ
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Conference papers on the topic "Colossal equivalent relative permittivity"

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Abukawa, S., T. Takabatake, Y. Namba, and K. Tani. "Electrical Properties of Al2O3-TiO2 Plasma Sprayed Coatings for Electrode of Corona Discharge." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p0985.

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Abstract Thermal sprayed ceramic coatings are well used as the electrode of corona discharge treatment in order to modify the surface of many kinds of films and papers due to its superior durability and adaptability. Some kinds of Al2O3-TiO2 were sprayed by APS on the parallel plate electrodes, and output power of corona discharge generated by the electrodes was measured by using Sawyer-Tower circuit. In addition, discharge output power was calculated with an equivalent circuit of corona discharge. By comparing them, effects of the electrical property of the coating on discharge was researched
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