Magnetomechanical properties of a high-temperature Ni-Mn-Ga magnetic shape memory actuator material

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A Ni–Mn–Ga single crystal with a phase transformation temperature above 350 K is investigated. The material demonstrates a magnetic field-induced strain (MFIS) of 7% at room temperature and of 4.2% at 350 K. The temperature dependence of the magnetic anisotropy and of the saturation magnetization has been studied in detail. At 350 K a maximum magnetic stress of 1.6 MPa and a twinning stress of 0.6 MPa were measured, explaining the MFIS obtained at elevated temperatures.

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ISO 690PAGOUNIS, Emmanouel, Aleksej LAPTEV, Julian JUNGWIRTH, Markus LAUFENBERG, Mikhail FONIN, 2014. Magnetomechanical properties of a high-temperature Ni-Mn-Ga magnetic shape memory actuator material. In: Scripta Materialia. 2014, 88, pp. 17-20. ISSN 1359-6462. Available under: doi: 10.1016/j.scriptamat.2014.06.013
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@article{Pagounis2014Magne-28604,
  year={2014},
  doi={10.1016/j.scriptamat.2014.06.013},
  title={Magnetomechanical properties of a high-temperature Ni-Mn-Ga magnetic shape memory actuator material},
  volume={88},
  issn={1359-6462},
  journal={Scripta Materialia},
  pages={17--20},
  author={Pagounis, Emmanouel and Laptev, Aleksej and Jungwirth, Julian and Laufenberg, Markus and Fonin, Mikhail}
}
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