Topic
Dielectric loss
About: Dielectric loss is a research topic. Over the lifetime, 20296 publications have been published within this topic receiving 349254 citations.
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TL;DR: In this paper, X-ray diffraction and Raman spectroscopy results showed the presence of distorted rhombohedral structure of Bi 1− x Ba x FeO 3 nanoparticles.
97 citations
TL;DR: In this article, the authors studied the dielectric properties of multwalled carbon nanotubes (MWCNTs) embedded in room temperature vulcanization silicone rubber (RT-SR) matrix by analyzing alternating current (ac) impedance spectra.
Abstract: Broad-frequency dielectric behaviors of multiwalled carbon nanotubes (MWCNTs) embedded in room temperature vulcanization silicone rubber (RT-SR) matrix were studied by analyzing alternating current (ac) impedance spectra, which would make a remarkable contribution for understanding some fundamental electrical properties in the MWCNT/RT-SR nanocomposites. Equivalent circuits of the MWCNT/RT-SR nanocomposites were built, and the law of polarization and mechanism of electric conductance under the ac field were acquired. Two parallel RC circuits in series are the equivalent circuits of the MWCNT/RT-SR composites. At different frequency ranges, dielectric parameters including conductivity, dielectric permittivity, dielectric loss, impedance phase, and magnitude present different behaviors.
97 citations
TL;DR: In this article, the authors investigated the properties of aqua[bis(dimethylaminomethyl-4-NIT-phenolato)]copper(II) as a function of frequency and temperature.
97 citations
TL;DR: In this article, the power law frequency response is accounted for well by the logarithmic mixing rule in 2D square networks with different proportions of resistors and capacitors.
Abstract: Simulations of the AC electrical characteristics of 2D square networks randomly filled with resistors or capacitors exhibit many features in common with experimental dielectric responses of solids. These include the `universal' fractional power law dispersions in permittivity and dielectric loss characterized by the Cole-Davidson response function. Simulations are presented of networks containing different proportions of resistors and capacitors which show that the power law frequency response is accounted for well by the logarithmic mixing rule. Limiting high and low frequency characteristics are found to be controlled by percolation paths of either resistors or capacitors. It is suggested that the power law response of a solid could be an indication that it is microscopically inhomogenous, containing an effective microscopic random network of conducting and dielectric insulating islands.
97 citations
TL;DR: A newly discovered co-doped titanium oxide material has an extremely high permittivity and negligible dielectric losses, and is likely to enable further scaling in electronic and energy-storage devices.
Abstract: The search for materials with colossal permittivity for use in capacitors has been met with limited success. A newly discovered co-doped titanium oxide material has an extremely high permittivity and negligible dielectric losses, and is likely to enable further scaling in electronic and energy-storage devices.
97 citations