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I. Rychetsky
Researcher at Academy of Sciences of the Czech Republic
Publications - 28
Citations - 500
I. Rychetsky is an academic researcher from Academy of Sciences of the Czech Republic. The author has contributed to research in topics: Dielectric & Permittivity. The author has an hindex of 11, co-authored 28 publications receiving 453 citations. Previous affiliations of I. Rychetsky include Czechoslovak Academy of Sciences.
Papers
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Dielectric dispersion of the relaxor PLZT ceramics in the frequency range 20 Hz-100 THz
Stanislav Kamba,Viktor Bovtun,Jan Petzelt,I. Rychetsky,R. Mizaras,A. Brilingas,Juras Banys,Jonas Grigas,M. Kosec +8 more
TL;DR: In this paper, the dielectric dispersion of the transparent relaxor ferroelectric ceramics PLZT 8/65/35 and 9.5/35 was determined in a wide frequency range including the microwave and infrared range.
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Broadband dielectric and conductivity spectroscopy of inhomogeneous and composite conductors
TL;DR: In this article, the authors summarize the phenomenological models used for fitting and basic understanding of such spectra, particularly of weak inhomogeneous and disordered conductors and composite conductor-dielectric materials within the effective medium approach.
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Dielectric Spectra of Grainy High-Permittivity Materials
I. Rychetsky,Jan Petzelt +1 more
TL;DR: In this paper, the generalized brick model is proposed to analyze the dielectric response of grainy systems, in which the shape of grains (separated by grain boundaries or cracks) is characterized by the depolarizing factor n=xg (0
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Dynamic Ferroelectric–Like Softening Due to the Conduction in Disordered and Inhomogeneous Systems: Giant Permittivity Phenomena
TL;DR: In this article, the case of macroscopically inhomogeneous dielectric materials with non-negligible conduction (particularly disordered (semi)conductors) was discussed for the cases of increasing lowfrequency permittivity (Maxwell-Wagner and giant-permittivity phenomena).
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Grain Boundary and Size Effect on the Dielectric, Infrared and Raman Response of SrTiO3 Nanograin Ceramics
Jan Petzelt,Tetyana Ostapchuk,Ivan Gregora,Dmitry Nuzhnyy,I. Rychetsky,Karel Maca,Zhijian Shen +6 more
TL;DR: Petzelt et al. as discussed by the authors investigated the effect of the size of the grain on dielectric properties in undoped SrTiO 3 ceramics and showed that the reduced effective permittivity is fully accounted for by the infrared soft mode behaviour and, similar to single crystals and other ceramic studied, no dielectrics dispersion appears below the THz frequency range.