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Magnetic and structural properties of non-stoichiometric Ni-Mn-Ga ferromagnetic shape memory alloys

  • P. LázpitaEmail author
  • J. M. Barandiarán
  • J. Gutiérrez
  • M. Richard
  • S. M. Allen
  • R. C. O'Handley
Article

Abstract.

Structural and magnetic transition temperatures of ferromagnetic shape memory alloys present a strong dependence on slight departures from the stoichiometry, as does the mobility of twin boundaries responsible for the large magnetic field induced strains. In this work we study four non stoichiometric Ni-Mn-Ga polycrystalline alloys with compositions of 43–52 at.% nickel, excess manganese and deficient in gallium, and a single crystal of composition Ni52Mn26Ga22. Those compounds are of technical interest due to the observed large room temperature magnetic field induced strains. Calorimetric and magnetic measurements determined the martensitic transition and Curie temperatures of the alloys (AS = 331 K and TCurie = 366 K for 52 at.% nickel alloy). Nickel defective alloys present a martensitic transition region broader than excess nickel ones. Neutron powder diffraction analysis confirmed orthorhombic martensitic structures for nickel defective alloys, and tetragonal for excess nickel ones. In the 52 atomic % nickel alloys case the crystallographic structure of the martensitic phase was also obtained on a single crystal with the same composition, trained to get a single variant in agreement with determined in the powder sample.

Keywords

Curie Temperature European Physical Journal Special Topic Martensitic Transition Magnetic Transition Temperature Polycrystalline Alloy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. P.J. Webster, K.R.A. Ziebeck, S.L. Town, M.S. Peak, Philosophical Magazine B 49, 295 (1984) Google Scholar
  2. V.V. Martynov, J. Phys. IV (France) 5, 91 (1995) Google Scholar
  3. J. Tellinen, I. Soursa, A. Jääskeläinen, I. Aaltio, K. Ullakko, Proc. 8th Int. Conf. on New Actuators (Actuator, 2002) Google Scholar
  4. P.J. Brown, B. Dennis, J. Crangle, T. Kanomata, M. Matsumoto, K.U. Neumann, L.M. Justham, K.R.A. Ziebeck, J. Phys.: Cond. Matter 16, 65 (2004) Google Scholar
  5. R. Tickle, R.D. James, J. Magn. Magn. Mater. 195, 627 (1999) Google Scholar
  6. S.J. Murray, M.A. Marioni, A.M. Kukla, J. Robinson, R.C. O'Handley, S.M. Allen, J. Appl. Phys. 87, 5774 (2000) Google Scholar
  7. A. Sozinov, A.A. Likhachev, N. Lanska, K. Ullakko, Appl. Phys. Lett. 80, 1746 (2002) Google Scholar
  8. R.C. O'Handley, J. Appl. Phys. 83, 3263 (1998) Google Scholar
  9. J. Murray, M. Farinelli, C. Kantner, J.K. Huang, S.M. Allen, R.C. O'Handley, J. Appl. Phys. 83, 7297 (1998) Google Scholar
  10. V.A. Chernenko. E. Cesari, V.V. Kokorin, I.N. Vitenko, Scr. Metall. Mater. 33, 1239 (1995) Google Scholar
  11. E. Cesari, V.A. Chernenko, V.V. Kokorin, J. Pons, C. Seguí, Acta Mater. 45, 999 (1997) Google Scholar
  12. N. Glavatska, G. Mogylny, I. Glavatskiy, V. Gavriljuk, Scr. Mater. 46, 605 (2002) Google Scholar
  13. X. Jin, M. Marioni, D. Bono, S.M. Allen, R.C. O'Handley, T.Y. Hsu, J. Appl. Phys. 91, 8222 (2002) Google Scholar
  14. A.N. Vasil'ev, A.D. Bozhko, V.V. Khovailo, I.E. Dikshtein, V.G. Shavrov, V.D. Buchelnikov, M. Matsumoto, S. Suzuki, T. Takagi, J. Tani, Phys. Rev. B 59, 1113 (1999) Google Scholar
  15. V.A. Chernenko, C. Seguí, E. Cesari, J. Pons, V.V. Kokorin, Phys. Rev. B 57, 2659 (1998) Google Scholar
  16. V. Soolshenko, N. Lanska, K. Ullakko, J. Phys. IV (France) 112, 947 (2003) Google Scholar
  17. M. Richard, J. Feuchtwanger, S.M. Allen, R.C. O'Handley, P. Lázpita, J.M. Barandiarán, J. Gutiérrez, B. Ouladdiaf, C. Mondelli, T. Lograsso, D. Schlagel, Phil. Mag. 87, 3437 (2007) Google Scholar
  18. Y. Li, C. Jiang, T. Liang, Y. Ma, H. Xu, Scr. Mater. 48, 1255 (2003) Google Scholar
  19. K. Oikawa, T. Ota, Y. Sutou, T. Ohmori, R. Kainuma, K. Ishida, Mater. Trans. 43, 2360 (2002) Google Scholar
  20. M. Richards, J. Feuchtwanger, D. Schlagel, T. Lograsso, S.M. Allen, R.C. O'Handley, Scr. Mater. 54, 1797 (2006) Google Scholar
  21. J. Rodriguez-Carvajal, Physica B 192, 55 (1993) Google Scholar
  22. O. Heczko, A. Sozinov, K. Ullakko, IEEE Trans. Magn. 36, 3266 (2000) Google Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  • P. Lázpita
    • 1
    Email author
  • J. M. Barandiarán
    • 1
  • J. Gutiérrez
    • 1
  • M. Richard
    • 2
  • S. M. Allen
    • 2
  • R. C. O'Handley
    • 2
  1. 1.Depto. Electricidad y Electrónica, Fac. Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU)BilbaoSpain
  2. 2.Department of Materials Science and Eng.CambridgeUSA

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