Incommensurate and Commensurate Structural Modulation in Martensitic Phases of FSMA

Abstract:

Magnetic and structural properties in multifunctional FSMA (Ferromagnetic Shape Memory Alloys) belonging to Heusler family are frequently related to the occurrence of structural modulation in martensitic phases. The highest MFIS (Magnetic Field Induced Strain) effect has been observed in Ni-Mn-Ga alloys showing martensitic modulated structures. Depending on the composition, pressure and temperature conditions, this periodic structural distortion, consisting of shuffling of atomic layers along specific crystallographic directions, accompanies the martensitic transformation. Over the years, different modulated martensitic structures have been observed and classified depending upon the periodicity of corresponding superstructure (nM with n=3, 5, 6, 7, 12 etc). On the other hand, it has been demonstrated that in most cases such structural modulation is incommensurate and the crystal structure can be solved by applying superspace approach. The crystallographic representation of different modulated structures, obtained by structure refinement on powder diffraction data, suggests a unified description where every different “nM” periodicity can be straightforwardly represented. It will be presented an overview illustrating structural features of several displacive modulated martensitic lattices. For a specific Ni-Mn-Ga composition, the evolution of structural modulation upon temperature change will be illustrated.

• Periodical: Materials Science Forum (Volume 635)
• Pages: 33-41
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.635.33
• Online since: December 2009
• Authors: Lara Righi, Franca Albertini, Antonio Paoluzi, Simone Fabbrici, Elena Villa, Gianluca Calestani, Stefano Besseghini
• Keywords: Ferromagnetic Shape Memory Alloys (FSMAs), Incommensurate Modulations, Martensitic Structure, Powder Diffraction

References

[1] Advances in Shape Memory Materials. Edited by V.A. Chernenko Vol 583 Materials Science Forum, Trans Tech Pubblications Inc., Switzerland, (2008).

[2] L. Pareti, M. Solzi, F. Albertini, A. Paoluzi: Eur. Phys. J. B Vol. 32 (2003), p.303.

[3] R. C. O'Handley: J. Appl. Phys. Vol. 83 (1998), p.3263.

[4] F. Albertini, L. Morellon, P. A. Algarabel, M. R. Ibarra, L. Pareti, Z. Arnold, and G. Calestani: J. Appl. Phys. Vol. 89 (2001), p.5614.

DOI: 10.1063/1.1350630

[5] F. Albertini, L. Pareti, A. Paoluzi, L. Morellon, P.A. Algarabel, M.R. Ibarra, and L. Righi: Appl. Phys. Lett. Vol. 81 (2002), p.4032.

DOI: 10.1063/1.1525071

[6] P.J. Webster, K.R.A. Ziebeck, S.L. Town, M.S. Peak: Phil. Mag. Vol. B 49 (1984), p.295.

[7] V.V. Martynov, V.V. Kokorin : Journ. de Phys. III Vol. 2 (1992), p.739.

[8] V.V. Martynov : Journ. de Phys. IV Vol. C8 (1995), p.91.

[9] J. Pons, V.A. Chernenko, R. Santamarta, E. Cesari: Acta Mater. Vol. 48 (2000), p.3027.

[10] J. Pons , R. Santamarta, V.A. Chernenko, E. Cesari: Mater. Sci. Eng. A Vol. 438-440 (2006), p.931.

[11] A. Sozinov, A. Likhachev, K. Ullakko: IEEE Trans. Magn. Vol. 38 (2002), p.2814.

[12] P. Mullner, K Ullakko: Phys Stat Sol Vol. B202 (1998), p. R1.

[13] L. Righi, F. Albertini, G. Calestani, L. Pareti, A. Paoluzi, C. Ritter, P.A. Algarabel, L. Morellon, M.R. Ibarra: J. Solid State Chem. Vol. 179 (2006), p.3525.

DOI: 10.1016/j.jssc.2006.07.005

[14] L. Righi L, F. Albertini F, L. Pareti L, A. Paoluzi, G. Calestani: Acta Mater. Vol. 55 (2007), p.5237.

DOI: 10.1016/j.actamat.2007.05.040

[15] L. Righi, F. Albertini, E. Villa, A. Paoluzi, G. Calestani, V. Chernenko, S. Besseghini, C. Ritter, F. Passaretti: Acta Mater. Vol. 56 (2008), p.4529.

DOI: 10.1016/j.actamat.2008.05.010

[16] T. Janssen, A. Janner, A. Looijenga and P.M. Wolff: in International Tables for Crystallography Vol. C, Sect. 9. 8., Kluwer, Dordrecht, , (1992).

[17] P.J. Brown , P.J. Crangle, J. Kanomata, T.M. Matsumoto, K.U. Neumann, B. Ouladdiaf, and K. R. A. Ziebeck: J. Phys. Cond. Matter Vol. 14 (2002), p.10159.

DOI: 10.1088/0953-8984/14/43/313

[18] A. Zheludev, S.M. Shapiro, P. Wochner, L.E. Tanner: Phys. Rev B Vol. 54 (1996), p.15045.

[19] Y. Ge, O. Söderberg, N. Lanska, A. Sozinov, K. Ullakko, V.K. Lindroos: J. Phys IV France Vol. 112 (2003), p.112.

DOI: 10.1051/jp4:20031031

[20] Y Noda, S.M. Shapiro, G. Shirane,Y. Yamada, L.E. Tanner: Phys Rev B Vol. 42 (1990), p.10397.

[21] A. Sozinov, A.A. Likhachev, N. Lanska, K. Ullakko: Appl. Phys. Lett. Vol. 80 (2002), p.1746.

[22] U Gaizsch, M. Potschke, S. Roth, N. Mattern, B. Rellinghaus, L. Schultz: J Alloys Comp Vol. 443 (2007), p.99.

[23] C. Jiang, Y. Muhammad, L. Deng, W. Wu, H. Xu : Acta Mater Vol. 52 (2004), p.2779.

[24] S. Morito, K. Otsuka: Mater Sci Engign A Vol. 208 (1996), p.47.

[25] L. Righi, P. Lázpita, J. Gutierrez, J.M. Barandiaran, V.A. Chernenko, G. Calestani : submitted to Scripta Mater. (2009).