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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Investigation of low field response of metamagnetic Heusler alloys as multiphysic memory alloys
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Investigation of low field response of metamagnetic Heusler alloys as multiphysic memory alloys

机译：对多体记忆合金的血型流动合金低场响应的研究

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摘要

Extending the concept of shape memory alloys, multiphysic memory alloys (MPMAs) based on Heusler compounds show remarkable properties in terms of multiphysic transitions coupling thermal, structural and magnetic domains. Such characteristics thus unveil new application potentials in the field of actuation or energy harvesting for instance. In particular, one of the most notable features of such materials lies in the presence of a magnetic response in a particular temperature range. In order to further investigate the origin of such characteristics, this study aims at providing qualitative and quantitative theoretical insights for shaping potential future material developments and tailoring, along with experimental investigations supporting the proposed theoretical framework. Such a development is done by considering that the unique MPMA behavior originates from the combination of a first-order hysteretic structural transition between martensitic and austenite phases with a ferromagnetic behavior of the austenite phase. Comparison of such an approach with experimental magnetic property measurements of a metamagnetic Heusler nickel-cobalt-manganese-indium alloy shows a good ability to predict the low-field magnetic response, highlighting the main involved parameters for further developments.
机译：延伸形状记忆合金的概念，基于Heusler化合物的多体内存合金（MPMAS）在多体转换耦合热，结构和磁畴方面表现出显着的性质。因此，这种特性在例如致动或能量收集领域揭示了新的应用势。特别地，这种材料的最值得注意的特征之一在特定温度范围内存在磁响应。为了进一步调查这种特征的起源，本研究旨在为塑造潜在的未来物质发展和剪裁以及支持所提出的理论框架的实验调查提供定性和定量的理论上见解。通过考虑独特的MPMA行为来完成这种发展，从马氏体和奥氏体相之间的一阶滞后结构转变的组合具有奥氏体相的铁磁性行为。这种方法对具有二胺镍钴 - 钴 - 锰 - 铟合金的实验磁性测量的这种方法显示出预测低场磁响应的良好能力，突出了主要涉及进一步发展的参数。

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