About: Effect of Oxygen on the Mn-Co Ferromagnetic Coupling

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Práce popisuje studium vlivu oxidace na magnetickou vazbu mezi atomy Mn a Co v ultratenkých vrstvách Mn nanesených na Co(0001). Magnetický diagram byl studován pomocí metody těsné vazby se zobecněným gradientovým přiblížením pro funkcionál hustoty. Výpočty naznačují že kyslík má tendenci destabilizovat feromagnetickou vazbu Mn-Co ve prospěch antiferomagnetické vazby nalezené po oxidaci experimentálně. Nicméně, pozorované (1x1) struktury se nezdají být nejstabilnějšími. Uvažujeme, zda neuspořádaná oxidovaná povrchová slitina MnCo by mohla vysvětlit experimentální pozorování. (cs) The paper describes the study of the effect of oxidation on the magnetic coupling between Mn and Co atoms in ultrathin Mn films deposited on fcc Co(001). The magnetic map has been investigated through tight-binding linear-muffin-tin scheme within generalized gradient approximation of the density functional. The calculations indicate that oxygen tends to destabilize the ferromagnetic Mn-Co coupling in favour of an antiferromagnetic coupling found by experiment when the oxygen is added. Nevertheless, the (1x1) structure observed do not seem to be the most stable one. We speculate that a disordered oxidized Mn-rich MnCo surface alloy might explain the experimental findings. The paper describes the study of the effect of oxidation on the magnetic coupling between Mn and Co atoms in ultrathin Mn films deposited on fcc Co(001). The magnetic map has been investigated through tight-binding linear-muffin-tin scheme within generalized gradient approximation of the density functional. The calculations indicate that oxygen tends to destabilize the ferromagnetic Mn-Co coupling in favour of an antiferromagnetic coupling found by experiment when the oxygen is added. Nevertheless, the (1x1) structure observed do not seem to be the most stable one. We speculate that a disordered oxidized Mn-rich MnCo surface alloy might explain the experimental findings. (en)
Title	Effect of Oxygen on the Mn-Co Ferromagnetic Coupling Vliv kyslíku na feromagnetickou vazbu Mn-Co (cs) Effect of Oxygen on the Mn-Co Ferromagnetic Coupling (en)
skos:prefLabel	Effect of Oxygen on the Mn-Co Ferromagnetic Coupling Vliv kyslíku na feromagnetickou vazbu Mn-Co (cs) Effect of Oxygen on the Mn-Co Ferromagnetic Coupling (en)
skos:notation	RIV/61388955:_____/04:00101039!RIV/2005/AV0/A54005/N
http://linked.open.../vavai/riv/strany	369;374
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(KSK4040110)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Pick, Štěpán
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	561971
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/04:00101039
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	density functional calculations; ultrathin magnetic films; cobalt (en)
http://linked.open.../riv/klicoveSlovo	cobalt ultrathin magnetic films density functional calculations
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[1AE751650ED5]
http://linked.open...i/riv/nazevZdroje	Catalysis Today
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Theoretical fundamentals of chemical reactions and processes
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	89
http://linked.open...iv/tvurceVysledku	Pick, Štěpán Demangeat, C.
issn	0920-5861
number of pages	6 (xsd:int)

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