The wrapping up of the IDEA project: International Workshop on Environment, Demersal Resources and Fisheries

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• 作者：Enric Massutí ; Joan Moranta ; John D.M. Gordon ; Beatriz Morales-Nin ; Pere Oliver
• 关键词：Bulk metallic glasses ; Magnetocaloric effect ; Magnetic entropy change ; Refrigerant capacity
• 刊名：Journal of Marine Systems
• 出版年：2008
• 出版时间：June 2008
• 年：2008
• 卷：71
• 期：3-4
• 页码：221-222
• 全文大小：94 K

文摘

We present here a large magnetocaloric effect and refrigerant capacity in Gd₃₆Y₂₀Al₂₄Co₂₀ bulk metallic glass with high thermal stability. A maximum magnetic entropy change of 7.76 J kg⁻¹ K⁻¹ has been observed under a field of 5 T near the Curie temperature of 53 K. The temperature range of the half maximum of the entropy change peak is as large as 76 K, resulting in a refrigerant capacity of about 459 J kg⁻¹. The larger refrigerant efficiency than that of the known crystalline materials suggests that this BMG alloy is a promising candidate for magnetic refrigerants in cryogenic temperature range of 20–100 K.