Počet záznamů: 1
The influence of magnetostatic interactions in exchange-coupled composite particles
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SYSNO ASEP 0347848 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The influence of magnetostatic interactions in exchange-coupled composite particles Tvůrce(i) Vokoun, David (FZU-D) RID, ORCID
Beleggia, M. (DK)
De Graef, M. (US)
Hou, H.C. (TW)
Lai, C.H. (TW)Zdroj.dok. Journal of Physics D-Applied Physics. - : Institute of Physics Publishing - ISSN 0022-3727
Roč. 43, č. 27 (2010), s. 275001-275007Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova magnetic recording materials ; magnetic multilayers ; magnetic thin film ; magnetostac interaction ; magnetic anisotropy Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000279003700006 DOI 10.1088/0022-3727/43/27/275001 Anotace Exchange-coupled composite (ECC) particles are the basic constituents of ECC magnetic recording media. We examine and compare two types of ECC particles: (i) core–shell structures, consisting of a hard-magnetic core and a coaxial soft-magnetic shell and (ii) conventional ECC particles, with a hard-magnetic core topped by a soft cylindrical element. The model we present describes the magnetic response of the two ECC particle types, taking into account all significant magnetic contributions to the energy landscape. Special emphasis is given to the magnetostatic (dipolar) interaction energy. We find that both the switching fields and the zero-field energy barrier depend strongly on the particle geometry. A comparison between the two types reveals that core–shell ECC particles are more effective in switching field reduction, while conventional ECC particles maintain a larger overall figure of merit. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2011
Počet záznamů: 1