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Single-particle and collective excitations of polar water molecules confined in nano-pores within a cordierite crystal lattice
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SYSNO ASEP 0566631 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Single-particle and collective excitations of polar water molecules confined in nano-pores within a cordierite crystal lattice Author(s) Belyanchikov, M. A. (RU)
Bedran, Z.V. (RU)
Savinov, Maxim (FZU-D) RID, ORCID
Bednyakov, Petr (FZU-D) RID, ORCID
Proschek, P. (CZ)
Prokleška, J. (CZ)
Abalmasov, V.A. (RU)
Zhukova, E.S. (RU)
Thomas, V.G. (RU)
Dudka, A. (RU)
Zhugayevych, A. (RU)
Petzelt, Jan (FZU-D) RID, ORCID, SAI
Prokhorov, A. S. (RU)
Anzin, V.B. (RU)
Kremer, R. K. (DE)
Fischer, J.K.H. (DE)
Lunkenheimer, P. (DE)
Loidl, A. (DE)
Uykur, E. (DE)
Dressel, M. (RU)
Gorshunov, B. (RU)Number of authors 21 Source Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 24, č. 11 (2022), s. 6890-6904Number of pages 15 s. Language eng - English Country GB - United Kingdom Keywords classcial anharmonic-oscillator ; square ise ; dynamic susceptibility ; ferroelectric ice ; quantum ; transition ; diffusion ; behavior ; surface Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects GA20-01527S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000765408600001 EID SCOPUS 85127200454 DOI 10.1039/d1cp05338h Annotation In the present work, comprehensive broad-band dielectric spectroscopy is combined with specific heat studies and molecular dynamics and Monte Carlo simulations in order to investigate in more detail the collective modes and single-particle excitations of nanoconfined water molecules. From DFT-MD simulations we reconstruct the potential-energy landscape experienced by the H2O molecules. A rich set of anisotropic temperature-dependent excitations is observed in the terahertz frequency range. Their origin is associated with the complex rotational/translational vibrations of confined H2O molecules. A strongly temperature dependent relaxational excitation, observed at radio-microwave frequencies for E||a is analyzed in detail. The temperature dependences of loss-peak frequency and dielectric strength of the excitation together with specific heat data confirm a ferroelectric order–disorder phase transition in the network of H2O dipoles. Additional data are also provided for E||b. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://doi.org/10.1039/d1cp05338h
Number of the records: 1