About: From direct to inverse giant magnetocaloric effect in Co-doped NiMnGa multifunctional alloys

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About: From direct to inverse giant magnetocaloric effect in Co-doped NiMnGa multifunctional alloys Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report the magnetic and magnetocaloric properties in Co-doped Ni-Mn-Ga Heusler alloys around the Mn-rich composition Ni50Mn30Ga20. The presence of Co affects profoundly the critical temperatures and alters the exchange interactions of martensite and austenite to different extents by varying the composition it is possible to tune the critical temperatures and to induce a paramagnetic gap between the magnetically ordered martensite and magnetic austenite,thus giving rise to a reverse magnetostructural transformation.Contrary to the Co-free alloys,the saturation magnetization moment of austenite is strongly enhanced by Co with respect to the martensitic one:thus the magnetocaloric effect turns from direct into inverse.Remarkable values of the magnetic properties related to the magnetocaloric effect,e.g. the saturation magnetization jump at the transformation(DM) and the field dependence of the transformation temperature(dT/dH)are reported. We report the magnetic and magnetocaloric properties in Co-doped Ni-Mn-Ga Heusler alloys around the Mn-rich composition Ni50Mn30Ga20. The presence of Co affects profoundly the critical temperatures and alters the exchange interactions of martensite and austenite to different extents by varying the composition it is possible to tune the critical temperatures and to induce a paramagnetic gap between the magnetically ordered martensite and magnetic austenite,thus giving rise to a reverse magnetostructural transformation.Contrary to the Co-free alloys,the saturation magnetization moment of austenite is strongly enhanced by Co with respect to the martensitic one:thus the magnetocaloric effect turns from direct into inverse.Remarkable values of the magnetic properties related to the magnetocaloric effect,e.g. the saturation magnetization jump at the transformation(DM) and the field dependence of the transformation temperature(dT/dH)are reported. (en)
Title	From direct to inverse giant magnetocaloric effect in Co-doped NiMnGa multifunctional alloys From direct to inverse giant magnetocaloric effect in Co-doped NiMnGa multifunctional alloys (en)
skos:prefLabel	From direct to inverse giant magnetocaloric effect in Co-doped NiMnGa multifunctional alloys From direct to inverse giant magnetocaloric effect in Co-doped NiMnGa multifunctional alloys (en)
skos:notation	RIV/68378271:_____/11:00358968!RIV12-AV0-68378271
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0030), Z(AV0Z10100521)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Kamarád, Jiří Arnold, Zdeněk
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	200427
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/11:00358968
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Ni–Mn–Ga–Co; ferromagnetic shape memory alloys; magnetostructural transformations; magnetic properties; inverse magnetocaloric effect (en)
http://linked.open.../riv/klicoveSlovo	Ni–Mn–Ga–Co ferromagnetic shape memory alloys inverse magnetocaloric effect magnetostructural transformations magnetic properties
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[BC9E4BB44579]
http://linked.open...i/riv/nazevZdroje	Acta Materialia
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	11 (xsd:int)
http://linked.open...vavai/riv/projekt	Anisotropic magnetocaloric effect - enhancement of application potential of magnetic refrigerants
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	59
http://linked.open...iv/tvurceVysledku	Albertini, F. Arnold, Zdeněk Bolzoni, F. Cabassi, R. Casoli, F. Fabbrici, S. Kamarád, Jiří Paoluzi, A. Pernechele, C. Porcari, G. Solzi, C.
http://linked.open...ain/vavai/riv/wos	000284789200042
http://linked.open...n/vavai/riv/zamer	Physics and technology of nanostructures, surfaces and thin films
issn	1359-6454
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.actamat.2010.09.059

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