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Large magnetocaloric effect and magnetoresistance behavior in Gd4Co3

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Abstract

We report a large entropy change (ΔS) below 300 K, peaking near T C = 220 K, due to isothermal change of magnetic field, for Gd4Co3, with a refrigeration capacity higher than that for, say, LaFe11.4Si1.6, ordering magnetically in the same temperature range. A noteworthy finding is that the isothermal magnetization is nonhysteretic — an important criterion for magnetic refrigeration without loss. ΔS behavior is also compared with that of magnetoresistance.

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Authors and Affiliations

  1. Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India

    N. Mohapatra, K. K. Iyer & E. V. Sampathkumaran

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  1. N. Mohapatra
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  2. K. K. Iyer
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  3. E. V. Sampathkumaran
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Correspondence to E. V. Sampathkumaran.

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Mohapatra, N., Iyer, K.K. & Sampathkumaran, E.V. Large magnetocaloric effect and magnetoresistance behavior in Gd4Co3 . Eur. Phys. J. B 63, 451–454 (2008). https://doi.org/10.1140/epjb/e2008-00266-x

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  • DOI: https://doi.org/10.1140/epjb/e2008-00266-x

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