Excellent magnetocaloric effect near 282 K of a Fe87Ce6Pr4B3 metallic glass ribbon
Source abstract
Abstract
We reported the excellent magnetocaloric effect near 282 K of a Fe 87Ce 6Pr 4B 3 metallic glass in this paper. The Fe 87Ce 6Pr 4B 3 metallic glass (MG) was fabricated into the shape of ribbon with typical amorphous characteristics in its X-ray diffraction pattern and differential scanning calorimetry curve. The MG is soft magnetic at 200 K (far below its Curie temperature ( Tc ∼ 282 K)) and paramagnetic at 380 K (well above its Tc). The Fe 87Ce 6Pr 4B 3 glassy ribbon shows rather high peak of magnetic entropy change ( −Δ Smpeak ≈ 3.95 J/(kg × K )) near 282 K under 5 T, which is the highest amongst the Fe-based MGs with Tc around 282 K. The high −Δ Smpeak near 282 K enables it to be employed for the construction of several amorphous hybrids that present flattened −Δ Sm profile. The high average −Δ Sm from ∼ 282 K to ∼ 315 K of the amorphous hybrids make them better candidates for the high-efficiency refrigerants of the household magnetic air-conditioner.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Metallic Glasses and Amorphous Alloys · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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