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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/11016

Title: Magnetocaloric effect in the intermetallic compound DyNi
Authors: TRIPATHY, SK
SURESH, KG
NIRMALA, R
NIGAM, AK
MALIK, SK
Keywords: magnetic-properties
refrigeration
crystal
phases
Issue Date: 2005
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: SOLID STATE COMMUNICATIONS, 134(5), 323-327
Abstract: Magnetic and heat capacity measurements have been carried out on the polycrystalline sample of DyNi, which crystallizes in the orthorhombic FeB structure (space group Pnma). This compound is ferromagnetic with a Curie temperature of 59 K. Magnetization-field isotherms at low temperatures show a multi-step behavior characteristic of metamagnetic transitions. The magnetocaloric effect has been measured both in terms of isothermal magnetic entropy change and adiabatic temperature change for various applied magnetic fields. The maximum values of the entropy change and the temperature change are found to be 19 J kg(-1) K-1 and 4.5 K, respectively, for a field of 60 kOe. The large magnetocaloric effect is attributed to the field-induced spin-flop metamagnetism occurring in this compound, which has a noncollinear magnetic structure at low fields. (c) 2005
URI: http://dx.doi.org/10.1016/j.ssc.2005.01.047
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11016
http://hdl.handle.net/10054/11016
ISSN: 0038-1098
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