Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653618 | Solid State Communications | 2005 | 5 Pages |
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 59Â 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 19Â JÂ kgâ1Â Kâ1 and 4.5Â K, respectively, for a field of 60Â 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.
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Authors
S.K. Tripathy, K.G. Suresh, R. Nirmala, A.K. Nigam, S.K. Malik,