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Instability of the Co magnetic state in Y.sub.2./sub.Co.sub.7./sub.-based compounds: effect of alloying for Y- and Co-sites
- 1.0331117 - FZÚ 2010 RIV NL eng J - Journal Article
Bartashevich, M. I. - Mushnikov, N. V. - Andreev, Alexander V. - Goto, T.
Instability of the Co magnetic state in Y2Co7-based compounds: effect of alloying for Y- and Co-sites.
[Nestabilita magnetického stavu Y2Co7- sloučeninách efekt ředění Y- a Co- pozic].]
Journal of Alloys and Compounds. Roč. 478, 1-2 (2009), s. 34-37. ISSN 0925-8388. E-ISSN 1873-4669
Grant - others:Russian Fondation for Basic Resarch(RU) 06-02-17349
Institutional research plan: CEZ:AV0Z10100520
Keywords : rare earth – 3d transition metal intermetallics * magnetic properties * itinerant electron metamagnetism * high field * magnetocrystaline anisotropy
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.135, year: 2009
High field magnetization process has been studied in the (Y1-xZrx)2Co7, (Y1-xUx)2Co7 and Y2(Co1-xAlx)7 systems in order to reveal the possibility of the transformation of the Co magnetic ions from the high to the low moment state. The spontaneous magnetic moment, Curie temperature and anisotropy constant have been found to decrease monotonously with increasing x in the single phase interval. The results suggest that the Co moment in present systems is unstable with respect to both electron concentration and exchange interactions. The average Co moment reduces to the value characteristic of the YCo3 compound. However, no signatures of the formation of the low moment Co state was found in the studied Y2Co7-based systems.
Vysokopolní magnetizační procesy byly studovány v (Y1-xZrx)2Co7, (Y1-xUx)2Co7 a Y2(Co1-xAlx)7 systémech k zjištění možnosti transformace Co iontů ze stavu s vysokým do stavu s nízkým magnetickým momentem. Výsledky naznačují, že Co moment v těchto systémech je nestabilní jak vůči elektronové koncentraci tak vůči výměnné interakci. Nicméně nebyly nalezeny žádné známky formování stavu s nízkým magnetickým momentem.
Permanent Link: http://hdl.handle.net/11104/0176729
Number of the records: 1