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CHARACTERIZATION OF DIRECT LASER DEPOSITED MAGNETOCALORIC Ni-Co-Mn-Sn

机译：直接激光沉积磁热静电Ni-Co-Mn-Sn的表征

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Ni-Mn-based Heusler alloys have been investigated for a number of different multifunctional applications, including shape memory and caloric effects under the influence of a magnetic field [1]. Ni-Mn-Sn alloys with small amount of Co have been found to exhibit a giant magnetocaloric effect (MCE) due to a large entropy change at the magnetic field-induced martensite -> austenite phase transition [2]. This entropy change corresponds to a large change in magnetization, leading these alloys to be designated as the metamagnetic shape memory alloys (MMSMAs). One of the attractive applications for MMSMAs is in refrigeration, replacing vapor compression technology to increase efficiency and decrease environmental impact [3]. Ni-Co-Mn-Sn is an inverse MCE material - it cools with an applied magnetic field - and an example of a refrigeration cycle using such a material is shown in Figure 1.
机译：已经研究了基于Ni-Mn的HEUSLER合金，用于许多不同的多功能应用，包括在磁场的影响下的形状记忆和热量效应[1]。由于磁场诱导的马氏体 - >奥氏体相转变的大熵变化，已发现具有少量Co的Ni-Mn-Sn合金具有巨大的磁无线效应（MCE）[2]。该熵变化对应于磁化的大变化，导致这些合金被指定为元磁形状记忆合金（MMSMAS）。 MMSMA的其中一个有吸引力的应用是制冷，取代蒸汽压缩技术以提高效率并降低环境影响[3]。 Ni-Co-Mn-Sn是一种反相材料 - 它用施加的磁场冷却 - 使用这种材料的制冷循环的示例如图1所示。

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