Počet záznamů: 1
Permittivity of polycrystal: Laminar structure
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SYSNO ASEP 0491088 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Permittivity of polycrystal: Laminar structure Tvůrce(i) Rychetský, Ivan (FZU-D) RID, ORCID
Klíč, Antonín (FZU-D) RID, ORCIDCelkový počet autorů 2 Zdroj.dok. Journal of the European Ceramic Society. - : Elsevier - ISSN 0955-2219
Roč. 38, č. 8 (2018), s. 3020-3024Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova polycrystal ; effective medium ; permittivity ; mixing rules ; dielectrics Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP GA15-04121S GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000430899400013 EID SCOPUS 85039915657 DOI 10.1016/j.jeurceramsoc.2017.12.048 Anotace A simple model of the laminar polycrystal is constructed that can be solved analytically and it also provides various mixing formulas. The polycrystal structure is composed of the layers, which represent rotated anisotropic crystallites. The dielectric response of such structure is much more complex comparing with the response of the layered structure built up of the isotropic materials. The general formal expressions for the effective permittivity were derived. The micro-geometry is determined by the distribution function of the crystal orientations. The effective permittivity can be controlled by variation of the distribution function. By discussing three examples it was shown that the uniform distribution of 2D rotations, as well as uniform 3D rotations, leads to the logarithmic-like mixing law of the effective permittivity. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2019
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