Dielectric ordering of water molecules arranged in a dipolar lattice
| Autor: | J. K. H. Fischer, Maxim Savinov, V. A. Abalmasov, Ece Uykur, M. A. Belyanchikov, V. G. Thomas, Peter Lunkenheimer, Elena S. Zhukova, Jan Prokleška, P. Bednyakov, Andriy Zhugayevych, V. B. Anzin, Martin Dressel, Alexander P. Dudka, Z. V. Bedran, Alois Loidl, A. S. Prokhorov, Boris Gorshunov, Petr Proschek, Reinhard K. Kremer, Jan Petzelt |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Ferroelectrics and multiferroics Phase transition Materials science Science General Physics and Astronomy 02 engineering and technology Dielectric General Biochemistry Genetics and Molecular Biology Article 03 medical and health sciences Condensed Matter::Materials Science Molecule ddc:530 Physics::Chemical Physics lcsh:Science Astrophysics::Galaxy Astrophysics Multidisciplinary Nanoscale materials Hydrogen bond Intermolecular force General Chemistry 021001 nanoscience & nanotechnology Ferroelectricity Polarization density Dipole 030104 developmental biology Phase transitions and critical phenomena Chemical physics lcsh:Q 0210 nano-technology |
| Zdroj: | Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Intermolecular hydrogen bonds impede long-range (anti-)ferroelectric order of water. We confine H2O molecules in nanosized cages formed by ions of a dielectric crystal. Arranging them in channels at a distance of ~5 Å with an interchannel separation of ~10 Å prevents the formation of hydrogen networks while electric dipole-dipole interactions remain effective. Here, we present measurements of the temperature-dependent dielectric permittivity, pyrocurrent, electric polarization and specific heat that indicate an order-disorder ferroelectric phase transition at T0 ≈ 3 K in the water dipolar lattice. Ab initio molecular dynamics and classical Monte Carlo simulations reveal that at low temperatures the water molecules form ferroelectric domains in the ab-plane that order antiferroelectrically along the channel direction. This way we achieve the long-standing goal of arranging water molecules in polar order. This is not only of high relevance in various natural systems but might open an avenue towards future applications in biocompatible nanoelectronics. Despite the apparent simplicity of a H2O molecule, the mutual ferroelectric ordering of the molecules is unresolved. Here, the authors realize a macroscopic ferroelectric phase transition in a network of dipole-dipole coupled water molecules located in nanopores of gemstone. |
| Databáze: | OpenAIRE |
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