Original title: Magneto-caloric effect in Lu.sub.2./sub.Fe.sub.17./sub. and Y.sub.2./sub.Fe.sub.17./sub. under high hydrostatic pressure
Translated title: Magnetokalorický jev v Lu.sub.2./sub.Fe.sub.17./sub. a Y.sub.2./sub.Fe.sub.17./sub. za vysokých hydrostatických tlaků
Authors: Součková, Monika ; Kamarád, Jiří ; Arnold, Zdeněk
Document type: Papers
Conference/Event: Conference of Czech and Slovak Physicists/16th./, Hradec Králové (CZ), 2008-09-08 / 2008-09-11
Year: 2009
Language: eng
Abstract: [eng] [cze]
Magneto-caloric effect of Lu2Fe17 and Y2Fe17 single crystals was measured at ambient pressure and under high hydrostatic pressure up to 1 GPa. Negative magneto-caloric effect was induced by high pressure in both the intermetallics in low-temperature range. Taking into consideration the first-order magnetic transition induced by pressure in Y2Fe17, the results of calculations of magnetic entropy change by Maxwell and by Clausius-Clapeyron equations were compared. Magnetokalorický jev (MCE) v monokrystalech Lu2Fe17 a Y2Fe17 byl měřen za hydrostatických tlaků do 1 GPa. V oblasti nízkých teplot byl působením vysokých tlaků vyvolán v obou intermetalických sloučeninách negativní MCE. S ohledem na tlakem indukovany magnetický přechod prvního druhu v Y2Fe17, je uvedeno srovnání výpočtu MCE pomocí Maxwellovy rovnice s výpočtem pomocí Clausius-Clapeyronova vztahu.
Keywords: high pressure; intermetallics; magneto-caloric effect
Project no.: CEZ:AV0Z10100521 (CEP), GA202/09/0030 (CEP)
Funding provider: GA ČR
Host item entry: Proceedings of the 16-th Conference of Czech and Slovak Physicists, ISBN 80-86148-93-9

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0005704

Permalink: http://www.nusl.cz/ntk/nusl-41231


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