Excellent magnetocaloric performance of a FessZ14P14B4 amorphous alloy and its amorphous hybrids br

Fe88Zr8-xPrxB4 (x = 2, 4, 6) ribbons with a thickness of -40 & mu;m were fabricated, but only the Fe88Zr8-xPrxB4 (x = 2, 4) samples can be quenched into fully amorphous state. The Fe88Zr8-xPrxB4 (x = 2, 4) amorphous ribbons exhibit higher Curie temperature (Tc) and maximum magnetic entropy change (- & UDelta;Smpeak) than those of the Fe88Zr8B4 amorphous alloy, without significant coercivity and spin-glass-like behaviors. The almost highest value of -& UDelta;Smpeak near 320 K of the Fe88Zr4Pr4B4 amorphous alloy (-4.0 J/(kg x K) under 5 T) makes it possible to construct several amorphous hybrids that exhibit specific table-shaped magnetic entropy change profiles with higher average - & UDelta;Sm and effective refrigeration capacity within the working temperature intervals of various domestic magnetic refrigerating appliances.

Automated summary

Fe88Zr8-xPrxB4 (x = 2, 4, 6) ribbons with a thickness of -40 μm were fabricated, but only Fe88Zr8-xPrxB4 (x = 2, 4) samples could be quenched into a fully amorphous state. The amorphous ribbons of Fe88Zr8-xPrxB4 (x = 2, 4) exhibited higher Curie temperature (Tc) and maximum magnetic entropy change (-ΔSmpeak) compared to Fe88Zr8B4 amorphous alloy, without significant coercivity and spin-glass-like behaviors. The almost highest value of -ΔSmpeak near 320 K (-4.0 J/(kg x K) under 5 T) for Fe88Zr4Pr4B4 amorphous alloy enables the construction of several amorphous hybrids with specific table-shaped magnetic entropy change profiles, having higher average -ΔSm and effective refrigeration capacity within the working temperature intervals of various domestic magnetic refrigerating appliances.