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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00358968" target="_blank" >RIV/68378271:_____/11:00358968 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.actamat.2010.09.059" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2010.09.059</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2010.09.059" target="_blank" >10.1016/j.actamat.2010.09.059</a>

Result language

angličtina

Original language name

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

Original language 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 magnetostructuraltransformation.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 magneticproperties 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA202%2F09%2F0030" target="_blank" >GA202/09/0030: Anisotropic magnetocaloric effect - enhancement of application potential of magnetic refrigerants</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta Materialia

ISSN

1359-6454

e-ISSN

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Volume of the periodical

59

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

412-419

UT code for WoS article

000284789200042

EID of the result in the Scopus database

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