Magnetic Properties of the Ferromagnetic Shape Memory Alloys Ni50+xMn27-xGa23 in Magnetic Fields

Takuo Sakon; Kohei Otsuka; Junpei Matsubayashi; Yuushi Watanabe; Hironori Nishihara; Kenta Sasaki; Satoshi Yamashita; Umetsu, Rie Y.; Hiroyuki Nojiri; Takeshi Kanomata
September 2014
Materials (1996-1944);Sep2014, Vol. 7 Issue 9, p3715
Academic Journal
Thermal strain, permeability, and magnetization measurements of the ferromagnetic shape memory alloys Ni50+xMn27-xGa23 (x = 2.0, 2.5, 2.7) were performed. For x = 2.7, in which the martensite transition and the ferromagnetic transition occur at the same temperature, the martensite transition starting temperature TMs shift in magnetic fields around a zero magnetic field was estimated to be dTMs/dB = 1.1 ± 0.2 K/T, thus indicating that magnetic fields influences martensite transition. We discussed the itinerant electron magnetism of x = 2.0 and 2.5. As for x = 2.5, the M4 vs. B/M plot crosses the origin of the coordinate axis at the Curie temperature, and the plot indicates a good linear relation behavior around the Curie temperature. The result is in agreement with the theory by Takahashi, concerning itinerant electron ferromagnets.


Related Articles

  • Large magnetic-field-induced strains in Ni–Mn–Ga nonmodulated martensite. Chernenko, V. A.; Chmielus, M.; Müllner, P. // Applied Physics Letters;9/7/2009, Vol. 95 Issue 10, p104103 

    Large magnetic field-induced strains of up to 0.17% for a stress-free Ni53.1Mn26.6Ga20.3 single crystal with nonmodulated martensite phase were generated in a rotating magnetic field. This magnetic-field-induced strain, which is ten times larger than values reported so far for nonmodulated...

  • Defect formation energy and magnetic properties of off-stoichiometric Ni-Mn-In alloys by first-principles calculations. Bai, J.; Xu, N.; Raulot, J.-M.; Zhang, Y. D.; Esling, C.; Zhao, X.; Zuo, L. // Journal of Applied Physics;May2013, Vol. 113 Issue 17, p174901 

    Ni-Mn-In is a novel type of magnetic shape memory alloy; it actualizes the shape memory effect through reverse martensitic transformation induced by magnetic field. But martensitic transformation cannot occur in the stoichiometric Ni2MnIn. Therefore, the composition adjustment must be carried...

  • Reversibility and irreversibility of magnetocaloric effect in a metamagnetic shape memory alloy under cyclic action of a magnetic field. Khovaylo, V. V.; Skokov, K. P.; Gutfleisch, O.; Miki, H.; Kainuma, R.; Kanomata, T. // Applied Physics Letters;8/2/2010, Vol. 97 Issue 5, p052503 

    We have studied adiabatic temperature change ΔTad in a Ni50Mn36Co1Sn13 metamagnetic shape memory alloy. An irreversible character of ΔTad has been observed in the vicinity of the reverse martensitic transformation. In this region, cyclic application of the magnetic field converts...

  • Martensitic transformation and shape memory effect in a ferromagnetic shape memory alloy: Mn2NiGa. Liu, G. D.; Chen, J. L.; Liu, Z. H.; Dai, X. F.; Wu, G. H.; Zhang, B.; Zhang, X. X. // Applied Physics Letters;12/26/2005, Vol. 87 Issue 26, p262504 

    Heusler alloy Mn2NiGa has been developed by synthesizing a series of ferromagnetic shape memory alloys Mn25+xNi50-xGa25 (x=0–25). Mn2NiGa exhibits a martensitic transformation around room temperature with a large thermal hysteresis up to 50 K and a lattice distortion as large as 21.3% and...

  • Magnetic field influence on the structural transformation in ferromagnetic shape memory alloy Mn50Ni40In10 melt spun ribbons. Sánchez Llamazares, J. L.; Hernando, B.; Prida, V. M.; García, C.; González, J.; Varga, R.; Ross, C. A. // Journal of Applied Physics;Apr2009, Vol. 105 Issue 7, p07A945 

    Direct and reverse martensitic transformations have been studied in Mn50Ni40In10 ribbons by means of magnetization and electrical resistivity measurements. The alloy is L21-type single-phase austenite, which transforms into a 14M monoclinic martensite. The martensitic transformation is...

  • Tuning the austenite and martensite phase fraction in ferromagnetic shape memory alloy ribbons of Ni45Co5Mn38Sn12. Lakhani, Archana; Dash, S.; Banerjee, A.; Chaddah, P.; Chen, X.; Ramanujan, R. V. // Applied Physics Letters;12/12/2011, Vol. 99 Issue 24, p242503 

    The ferromagnetic shape memory alloy ribbons with composition Ni45Co5Mn38Sn12 are shown to have field induced kinetically arrested ferromagnetic austenite phase down to the low temperature due to hindered martensite transformation. This gives rise to the coexisting martensite and austenite...

  • Martensite Transformation in Ni-Mn-Ga Ferromagnetic Shape-Memory Alloys. Richard, M. L.; Feuchtwanger, J.; Allen, S. M.; O'Handley, R. C.; Lázpita, P.; Barandiaran, J. M. // Metallurgical & Materials Transactions. Part A;Apr2007, Vol. 38 Issue 4, p777 

    The crystal structure of Ni-Mn-Ga ferromagnetic shape-memory alloys is extremely sensitive to composition. Several martensitic structures including tetragonal (five-layered), orthorhombic (seven-layered), and tetragonal have been observed. Temperature-dependent X-ray diffraction measurements and...

  • Reversible-strain criteria of ferromagnetic shape memory alloys under cyclic 3D magneto-mechanical loadings. He, Y. J.; Chen, X.; Moumni, Z. // Journal of Applied Physics;Aug2012, Vol. 112 Issue 3, p033902 

    Recent researches revealed that ferromagnetic shape memory alloys (FSMA) in 2D/3D configurations (with multi-axial stresses) had much more advantages (e.g., higher working stress and more application flexibility) than that in 1D configuration (with uniaxial stress). In literature, however, there...

  • Two-dimensional analysis to improve the output stress in ferromagnetic shape memory alloys. He, Y. J.; Chen, X.; Moumni, Z. // Journal of Applied Physics;Sep2011, Vol. 110 Issue 6, p063905 

    Most existing experiments investigating the martensite-variants reorientation (switching) of ferromagnetic shape memory alloys (FSMA) are in a simple 1D condition: An axial compressive stress and a transverse magnetic field. To obtain field-induced variant switching, however, the compressive...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics