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- W1991405897 abstract "The series of glassy ribbons Gd60M30In10 (M = Mn, Co, Ni, Cu) was synthesized by melt-spinning. The change of transition element M in these Gd-based metallic glasses was proven to induce huge variations of the Curie temperature TC, magnetic entropy change peak values ΔSm peak , and widths at half maximum values of the magnetic entropy change δT. When M is non magnetic (M = Co, Ni, Cu), the samples behave similarly: they display high values of ΔSm peak (between -6.6 and -8.2 J/kg K in a magnetic field variation of 4.6 T), average δT values (between 77 and 120 K) and no magnetic hysteresis. On the contrary, when M carries a magnetic moment (M = Mn), some irreversibility appears at low temperature, ΔSm peak is lower (only 3.1 J/kg K for μ0H = 4.6 T) and the magnetic transition is very large (δT = 199 K for μ0H = 4.6 T). These features are explained by some antiparallel coupling between Mn atoms randomly located in the metallic glass. This leads to the occurrence of a cluster-glass behavior at low temperature (35 K), following the ferromagnetic transition observed at 180 K when the temperature is decreased. Also, power law fittings of ΔSm peak and δT versus μ0H were performed and show that δT is less field dependent than ΔSm peak . We could then identify an interesting way of improving the refrigeration capacity of the material at low magnetic field." @default.
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- W1991405897 date "2011-09-01" @default.
- W1991405897 modified "2023-09-25" @default.
- W1991405897 title "Tunable magnetocaloric effect in Gd-based glassy ribbons" @default.
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- W1991405897 doi "https://doi.org/10.1063/1.3632983" @default.
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