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Elastocaloric effect in a textured polycrystalline Ni-Mn-In-Co metamagnetic shape memory alloy

机译：织构化多晶Ni-Mn-In-Co超磁性形状记忆合金的弹性热效应

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摘要

By direct measurements, the elastocaloric effect at various temperatures in a [001]-oriented Ni_(45.7)Mn_(36.6)In_(13.3)Co_(5.1) metamagnetic shape memory polycrystal has been investigated. A reversible temperature change of ±3.5 K, due to the relatively low stress (100 MPa) induced martensitic transformation, was observed at room temperature. A theoretical analysis based on the Debye description has revealed that the adiabatic temperature change arising from the lattice vibration plays a dominant role in the large elastocaloric effect for Ni-Mn-In-Co alloys.
机译：通过直接测量，已经研究了在[001]取向的Ni_（45.7）Mn_（36.6）In_（13.3）Co_（5.1）超磁性形状记忆多晶中在不同温度下的弹性热效应。在室温下，由于相对较低的应力（100 MPa）引起的马氏体相变，可逆温度变化为±3.5K。基于德拜描述的理论分析表明，晶格振动引起的绝热温度变化在Ni-Mn-In-Co合金的大弹性热效应中起主要作用。

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  • 来源
    《Applied Physics Letters》 |2014年第16期|161905.1-161905.4|共4页
  • 作者

    Binfeng Lu; Fei Xiao; Aru Yan; Jian Liu;

  • 作者单位

    Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China,Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China;

    State Key Lab of Metal Matrix Composite, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, People's Republic of China;

    Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China,Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China;

    Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China,Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China;

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