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On the physical properties of Sr.sub.1-x./sub.Na.sub.x./sub.RuO.sub.3./sub. (x = 0 - 0.19)
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SYSNO ASEP 0352057 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On the physical properties of Sr1-xNaxRuO3 (x = 0 - 0.19) Tvůrce(i) Tomeš, P. (CH)
Knížek, Karel (FZU-D) RID, ORCID
Weidenkaff, A. (CH)
Hejtmánek, Jiří (FZU-D) RID, ORCIDZdroj.dok. Solid State Sciences. - : Elsevier - ISSN 1293-2558
Roč. 12, č. 7 (2010), s. 1112-1120Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova perovskite SrRuO3 ; magnetism ; heat capacity ; weak localization Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000280381200014 EID SCOPUS 77953809026 DOI 10.1016/j.solidstatesciences.2010.04.011 Anotace The metallic ferromagnetic perovskite SrRuO3 (TC~160K) belongs to the materials with strongly correlated electrons. Nonetheless a simple ferromagnetism associated with isotropic interactions of low spin Ru4+ ions local moments is too simple to explain the complex interplay between charge carriers and magnetic interactions. In order to probe the robustness of the metallic ferromagnetism against electron occupation of 4d Ru orbital we prepared and characterized polycrystalline Sr1-xNaxRuO3 (x=0.0–0.19) ceramics. The substitution of Sr2+ by Na1+ induces the decrease of the Curie temperature and spin-wave stiffness, which was determined independently from magnetic and specific heat data. On the other hand the effective paramagnetic moment remains essentially unchanged. All compounds are metallic in a sense of electrical resistivity and thermopower temperature dependence. The metallic nature of the samples is corroborated by Pauli paramagnetism and high Sommerfeld coefficient gamma. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2011
Počet záznamů: 1