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Polycrystalline Ni50.4Mn27.3Ga22.3 alloy with texture was prepared by conventional casting. The alloy exhibited enhanced magnetocrystalline anisotropy after superelastic training. Decent conventional magnetocaloric effect (MCE) with magnetic-field-induced entropy change ΔS =… Click to show full abstract
Polycrystalline Ni50.4Mn27.3Ga22.3 alloy with texture was prepared by conventional casting. The alloy exhibited enhanced magnetocrystalline anisotropy after superelastic training. Decent conventional magnetocaloric effect (MCE) with magnetic-field-induced entropy change ΔS = 9.2 J/kg·K under a magnetic field 30 kOe and inverse MCE with ΔS = 2.5 J/kg·K under 5 kOe were demonstrated when the field was applied parallel and perpendicular to , respectively. As a result, large rotating MCE with ΔS = 4.2 J/kg·K under a low field of 20 kOe was achieved at room temperature. This shows that polycrystalline Ni-Mn-Ga alloys may act as promising magnetic refrigerants.
Journal Title: Acta Materialia
Year Published: 2020
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