Magnetocaloric effect in materials with the first order transitions - direct measurements

0355672 - FZÚ 2011 RIV PL eng J - Článek v odborném periodiku
Kamarád, Jiří - Kaštil, J. - Arnold, Zdeněk - Javorský, P. - Sechovský, V.
Magnetocaloric effect in materials with the first order transitions - direct measurements.
Acta Physica Polonica A. Roč. 118, č. 5 (2010), s. 1000-1001. ISSN 0587-4246. E-ISSN 1898-794X
Grant CEP: GA ČR GA202/09/0030
Grant ostatní: GA ČR(CZ) GA101/07/1173
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: magneto-caloric characteristics * first order transitions * Gd
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 0.467, rok: 2010
http://przyrbwn.icm.edu.pl/APP/PDF/118/a118z5p117.pdf

The results of direct measurements of the magneto-caloric characteristics ΔTad and the indirect determination of ΔSm of pure Gd around the Curie temperature and of the FeMnP0.45AS0.55 and Ni45Co5Mn31Ga19 intermetallics in the vicinity of the first order magnetic and structural phase transitions are presented and discussed. A pronounced temperature and field dependence of the first order transitions in the studied materials manifests restrictions applying these materials in magnetic refrigeration techniques. An effective use of the Ericsson and the Brayton refrigeration cycles with FeMnP0.45AS0.55 in the role of a refrigerant is discussed.
Trvalý link: http://hdl.handle.net/11104/0194387