Large magnetocaloric effect and magnetoresistance behavior in Gd4Co3
Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400005, India
Corresponding author: a email@example.com
Published online: 10 July 2008
We report a large entropy change (ΔS) below 300 K, peaking near TC = 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.
PACS: 75.30.Sg – Magnetocaloric effect, magnetic cooling / 75.60.Ej – Magnetization curves, hysteresis, Barkhausen and related effects
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008