Magnetocaloric properties in a FeNiGaMnSi high entropy alloy
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Date
2019-09-30
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Elsevier
Abstract
We investigated a new Fe26.7Ni26.7Ga15.6Mn20Si11 high entropy alloy (HEA) without the rare earth element. The structural, magnetic and magnetocaloric properties of the resulting materials are presented. The HEAs successfully is produced by the arc melting with suction casting method. The crystal structures are characterised through multiphase Rietveld refinement of X-ray diffraction data. The structure of the HEAs was found to be the body centred cubic (bcc). In the magnetic measurements, the ferromagnetic to paramagnetic transition was obtained in the range of 300–400 K. With the employed suction casting method; the Fe26.7Ni26.7Ga15.6Mn20Si11 HEA shows the best magnetocaloric properties as 1.59 Jkg−1K−1 maximum magnetic entropy change (0–2 T) and 75.68 Jkg-1 refrigeration capacity after the annealing process.
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Keywords
High entropy alloys (HEAs), Magnetic materials, Soft magnetic properties, Magnetocaloric effect (MCE), Solid-solution phase, Magnetic refrigerants, Room-temperature, Mechanical-properties, Behavior, CO, Microstructure, Stability, NI, Crystal structure, Entropy, Gallium alloys, High-entropy alloys, Iron alloys, Magnetic materials, Manganese alloys, Rare earths, Rietveld refinement, Silicon alloys, Soft magnetic materials, Magnetic entropy change, Magnetocaloric properties, Paramagnetic transition, Refrigeration capacity, Resulting materials, Soft magnetic properties, X-ray diffraction data, Materials science, Physics
Citation
Şarlar, K. vd. (2020). "Magnetocaloric properties in a FeNiGaMnSi high entropy alloy". Current Applied Physics, 20(1), 18-22.