Structure and magnetic entropy change of suck-cast Gd60Co26Al6Ge8 alloy |
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| Authors: | H. Fu H.J. Yu W.L. Zhou |
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| Affiliation: | a Department of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, PR China
b Advanced Materials Research Institute, University of New Orleans, New Orleans, LA 70148, USA |
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| Abstract: | The Gd60Co26Al6Ge8 alloy has been prepared by the copper-mold suck-casting and its phase component has been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). It is shown that this alloy consists of primary crystalline Gd5Ge3 phase and amorphous matrix. The glass transition temperature (Tg) and crystallization temperatures (Tx) occur at 292 and 320 °C, respectively. The maximal magnetic entropy change (ΔSM) under 0-5 T field is about 7.6 J (kg−1 K−1) at 155 K and the refrigeration capacity (RC) is about 768 J kg−1, which makes Gd60Co26Al6Ge8 bulk metallic glass matrix composite a promising candidate for magnetic refrigerant. |
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| Keywords: | Bulk metallic glass Composite Magnetic entropy change |
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