New magnetocaloric material based on GdNiH3.2 hydride for application in cryogenic devices

Medientyp: E-Artikel
Titel: New magnetocaloric material based on GdNiH3.2 hydride for application in cryogenic devices
Beteiligte: Smarzhevskaya, Alexandra I.; Iwasieczko, Waclaw; Verbetsky, Viktor N.; Nikitin, Sergey A.
Erschienen: Wiley, 2014
Erschienen in: physica status solidi c
Sprache: Englisch
DOI: 10.1002/pssc.201300728
ISSN: 1610-1642; 1862-6351
Schlagwörter: Condensed Matter Physics
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Beschreibung: <jats:title>Abstract</jats:title><jats:p>The paper presents the investigation of GdNiH<jats:sub>3.2</jats:sub> hydride magnetocaloric properties. The isothermal magnetization in the fields up to 5 T and heat capacity data are obtained for GdNiH<jats:sub>3.2</jats:sub> and GdNi compounds. The maximum value of magnetic entropy change Δ<jats:italic>S</jats:italic><jats:sub>M</jats:sub> in GdNiH<jats:sub>3.2</jats:sub> is extremely large and obtained in much lower temperature range compared to GdNi.</jats:p><jats:p>It is shown that the hydrogenation does not noticeably affect the value of Δ<jats:italic>S</jats:italic><jats:sub>M</jats:sub> but shifts Δ<jats:italic>S</jats:italic><jats:sub>M</jats:sub>(T) maximum to lower temperatures (∼ 11K). The possibility of GdNiH<jats:sub>3.2</jats:sub> application in cryogenic devices is discussed.</jats:p><jats:p>(© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p>

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