Výsledky vyhledávání - "Repcek, Dalibor"

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Weak-field FMR and magnetization near the collinear to conical ferrimagnetic phase transition in the U-type hexaferrite Sr4CoZnFe36O60 ceramics

Autor: Kempa, Martin, Bovtun, Viktor, Repček, Dalibor, Buršík, Josef, Kamba, Stanislav

Temperature evolution of the ferromagnetic resonance (FMR) and its interference with other microwave (MW) magnons near the collinear to conical ferrimagnetic phase transition at Tc2 = 305 K is found to correlate with the evolution of the weak-field m

Externí odkaz: http://arxiv.org/abs/2409.02625

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Polar Nematic Phases with Enantiotropic Ferro- and Antiferroelectric Behavior

Autor: Mrukiewicz, Mateusz, Czerwiński, Michał, Podoliak, Natalia, Repček, Dalibor, Perkowski, Paweł, Mandle, Richard. J., Węgłowska, Dorota

The recent discovery of a new ferroelectric nematic (NF) liquid crystalline phase became of utmost interest for the liquid crystal (LC) and the whole soft and condensed matter fields. Contrary to the previously known ferroelectric LC materials, whose

Externí odkaz: http://arxiv.org/abs/2403.02068

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Multiferroic quantum criticality in (Eu,Ba,Sr)TiO$_3$ solid solution

Autor: Repček, Dalibor, Proschek, Petr, Savinov, Maxim, Kachlík, Martin, Pospíšil, Jiří, Drahokoupil, Jan, Doležal, Petr, Prokleška, Jan, Kamba, Stanislav

Based on the earlier published theory (\textit{Nature Mat}. \textbf{18}, 223--228 (2019)), a comprehensive experimental investigation of multiferroic quantum critical behavior of (Eu,Ba,Sr)TiO$_3$ polycrystalline and single crystal samples was perfor

Externí odkaz: http://arxiv.org/abs/2401.04677

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Dimethylamino terminated ferroelectric nematogens revealing high permittivity

Autor: Cigl, Martin, Podoliak, Natalia, Landovský, Tomáš, Repček, Dalibor, Kužel, Petr, Novotná, Vladimíra

Since the recent discoveries, ferroelectric nematics became of upmost interest due to their outstanding ferroelectric properties. In this work, we prepared a series of polar molecules revealing a ferroelectric nematic phase (NF) with a very high diel

Externí odkaz: http://arxiv.org/abs/2301.04865

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Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3

Autor: Hovancik, David, Repcek, Dalibor, Borodavka, Fedir, Kadlec, Christelle, Dolezal, Petr, Kratochvilova, Marie, Kuzel, Petr, Kamba, Stanislav, Sechovsky, Vladimir, Pospisil, Jiri

Publikováno v: Journal of Physical Chemistry Letters, 2022,13, 11095

We use the synergy of infrared, terahertz, and Raman spectroscopies with DFT calculations to shed light on the magnetic and lattice properties of VI3. The structural transition at TS1 = 79 K is accompanied by a large splitting of polar phonon modes.

Externí odkaz: http://arxiv.org/abs/2209.03725

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