About: Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	CsNiF3 je dlouho znam jako prototyp jedno-dimenzionalniho ferromagnetickeho systemu. Pri nizkych teplotach je tato latka izolatorem a tudiz vymenne interakce nejsou dalekosahle. Pomoci ab initio pristupu a Heisenbergova modelu jsme zpocitali vymenne interakce podel feromagnetickych retezcu z Ni-atomu. Sila interakce byla pocitana az do vzdalenosti dvou atomovych sousedu a rovnez mezi retezci. Z vypoctenych vymennych interakce byla urcena Neelova teplota pomoci teorie stredniho pole a tzv. nahodne fazove aproximace. (cs) The CsNiF3 has been for long time studied as a prototype of quasi-1D planar ferromagnetic system. At very low temperature the studied system is insulator and therefore the magnetic exchange interactions should de- cay very rapidly. We treated the magnetic exchange coupling within the Heisenberg model for the nearest neighbor interaction between the anti- ferromagnetically coupled Ni-chains. The in?uence of up to the second- - -nearest neighbors on the ferromagnetic exchange coupling along the Ni-chains was determined. The exchange interactions were calculated for the experimental volume by the density functional theory, within the all-electron approach using the local density approximation for the exchange and cor- relation. The Ne´el temperature was calculated by means of the mean-?eld theory and by the random-phase approximation method. The CsNiF3 has been for long time studied as a prototype of quasi-1D planar ferromagnetic system. At very low temperature the studied system is insulator and therefore the magnetic exchange interactions should de- cay very rapidly. We treated the magnetic exchange coupling within the Heisenberg model for the nearest neighbor interaction between the anti- ferromagnetically coupled Ni-chains. The in?uence of up to the second- - -nearest neighbors on the ferromagnetic exchange coupling along the Ni-chains was determined. The exchange interactions were calculated for the experimental volume by the density functional theory, within the all-electron approach using the local density approximation for the exchange and cor- relation. The Ne´el temperature was calculated by means of the mean-?eld theory and by the random-phase approximation method. (en)
Title	Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles (en) Magnetické výměnné interakce a určení Neelovy teploty (cs)
skos:prefLabel	Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles (en) Magnetické výměnné interakce a určení Neelovy teploty (cs)
skos:notation	RIV/68378271:_____/08:00307829!RIV08-AV0-68378271
http://linked.open.../vavai/riv/strany	503;506
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA106/07/1078), Z(AV0Z10100521), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Rusz, Ján
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	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	377404
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/08:00307829
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	exchange interactions; magnetism; Heisenberg model; 1D ferromagnet; Neel temperature (en)
http://linked.open.../riv/klicoveSlovo	exchange interactions Heisenberg model Neel temperature magnetism 1D ferromagnet
http://linked.open...odStatuVydavatele	PL - Polská republika
http://linked.open...ontrolniKodProRIV	[EC58195ECC98]
http://linked.open...i/riv/nazevZdroje	Acta Physica Polonica. A
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Theoretical and experimental investigations of thermodynamic properties in transition metal based intermetallic phases
http://linked.open...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	113
http://linked.open...iv/tvurceVysledku	Legut, Dominik Rusz, Ján
http://linked.open...n/vavai/riv/zamer	Physics and technology of nanostructures, surfaces and thin films Physical properties of advanced materials in relation to their microstructure and processing
issn	0587-4246
number of pages	4 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles Magnetic Exchange Interactions and Estimation of TN in CsNiF3 from first principles

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