Entropy Changes in Ferromagnetic Shape Memory Alloys

Abstract:

Several features of the entropy change S related to the martensitic transformation (MT) in metamagnetic alloys are discussed. In these alloys a change in magnetic order is concomitant with the MT, as it occurs between ferromagnetic austenite and non-magnetic (weakly magnetic) martensite. In this case it has been shown that S strongly decreases as the MT temperature range go far below the Curie temperature of austenite. The behavior of S can be understood considering the different signs of the lattice and magnetic contributions to the total entropy change. It has been shown that the so called kinetic arrest of the MT is directly related to the decrease of S, which in the limit S → 0 leads to the suppression of the driving force for the transformation.

• Periodical: Materials Science Forum (Volume 684)
• Pages: 49-60
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.684.49
• Online since: May 2011
• Authors: Eduard Cesari, Daniel Salas, Sergey Kustov
• Keywords: Entropy Change, Ferromagnetic Shape Memory Alloys (FSMAs), Magnetic Field Induced Transformation, Martensitic Transformation (MT), Metamagnetic Alloys

References

[1] K. Ullakko, J.K. Huang, C. Kantner, R.C. O'Handley and V.V. Kokorin: Appl. Phys. Lett. 69 (1996) (1966).

[2] V. Chernenko, V. L'vov, E. Cesari, J. Pons, R. Portier and S. Zagorodnyuk : Mat. Trans. 43 (2002) 856.

DOI: 10.2320/matertrans.43.856

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

[4] V.A. Chernenko: Scripta Mater. 40 (1999) 523.

[5] A.A. Cherechukin, I.E. Dikshtein, D.I. Ermakov, A.V. Glebov, V.V. Koledov, D.A. Kosopalov, V.G. Shavrov, A.A. Tulaikova, E.P. Krasnoperov and T. Takagi: Physics Lett. A 291 (2001) 175.

DOI: 10.1016/s0375-9601(01)00688-0

[6] V.V. Khovailo, V. Novosad, T. Takagi, D.A. Filippov, R.Z. Levitin and A.N. Vasil'ev: Phys. Rev. B 70 (2004) 174413.

[7] R. Kainuma, Y. Imano, W. Ito, Y. Sutou, H. Morito, S. Okamoto, O. Kitakami, T. Kanomata and K. Ishida: Nature (London) 439 (2006) 957.

DOI: 10.1038/nature04493

[8] K. Oikawa, W. Ito, Y. Imano, Y. Sutou, R. Kainuma, K. Ishida, S. Okamoto, O. Kitakami and T. Kanomata: Appl. Phys. Lett. 88 (2006) 122507.

DOI: 10.1063/1.2187414

[9] K. Koyama, K. Watanabe, T. Kanoata, R. Kainuma, K. Oikawa and K. Ishida: Appl. Phys. Lett. 88 (2006) 132505.

[10] R. Kainuma, W. Ito, R.Y. Umetsu, K. Oikawa and K Ishida: Appl Phys Lett. 93 (2008) 091906.

[11] S.Y. Yu, Z.X. Cao, L. Ma, G.D. Liu, J.L. Chen, G.H. Wu, B. Zhang and X.X. Zhang: Appl. Phys. Lett. 91 (2007) 102507.

[12] V.K. Pecharsky, K.A. Gschneidner, A.O. Pecharsky and A.M. Tishin: Phys. Rev. B 64 (2001) 144406.

DOI: 10.1103/physrevb.64.144406

[13] W. Ito, Y. Imano, R. Kainuma, Y. Sutou, K, Oikawa and K, Ishida: Metall. and Mater. Trans. A 38 (2007) 759.

[14] T. Krenke, M. Acet, E.F. Wasserman, X. Moya, Ll. Mañosa, A. Planes: Phys. Rev. B 73 (2006) 174413.

[15] S. Kustov, M.L. Corró, J. Pons and E. Cesari: Appl Phys Lett. 94 (2009) 191901.

[16] W. Ito, M. Nagasako, R.Y. Umetsu, R. Kainuma, T. Kanomata and K. Ishida: Appl. Phys. Lett. 93 (2008) 232503.

DOI: 10.1063/1.3043456

[17] V. Sánchez-Alarcos, V. Recarte, J.I. Pérez-Landazabal and G.J. Cuello: Acta Mater. 55 (2007) 3883.

[18] R. Santamarta, E. Cesari, J. Font, J. Muntasell, J. Pons and J. Dutkiewicz: Scripta Mat. 54 (2006) (1985).

DOI: 10.1016/j.scriptamat.2006.03.018

[19] V.A. Chernenko, J. Pons, E. Cesari and K. Ishikawa: Acta Mat. 53 (2005) 5071.

[20] K. Oikawa, T. Omori, Y. Sutou, H. Morito, R. Kainuma and K. Ishida: Metal. Mater. Trans. A 38A (2007) 767.

[21] J. Font, J. Muntasell, R. Santamarta, J. Pons, E. Cesari, V. Recarte, J.I. Pérez-Landazábal, C. Gómez-Polo and J. Dutkiewicz: Mat. Sci. & Eng. A 481-482  (2008) 262.

DOI: 10.1016/j.msea.2007.01.183

[22] S. Kustov, I. Golovin, M.L. Corró and E. Cesari: J. Appl. Phys. 107 (2010) 053525.

[23] R.Y. Umetsu, W. Ito, K. Ito, K. Koyama, A. Fujita, K. Oikawa, T. Kanomata, R. Kainuma and K. Ishida: Scripta Mat. 60 (2009) 25.

DOI: 10.1016/j.scriptamat.2008.08.022

[24] V. Recarte, J.I. Pérez-Landazábal, C. Gómez-Polo, V. Sánchez-Alarcos, E. Cesari and J. Pons: J. Phys.: Condens. Matter 22 (2010) 416001.

DOI: 10.1088/0953-8984/22/41/416001

[25] V.K. Sharma, M.K. Chattopadhyay and S.B. Roy: Phys. Rev. B 76 (2007) 140401.

[26] S. Chatterjee, S. Giri and S. Majumdar: Phys. Rev. B 77 (2008) 224440.

[27] W. Ito, K. Ito, R.Y. Umetsu, R. Kainuma, K. Koyama, K. Watanabe, A. Fujita, K. Oikawa, K. Ishida and T. Kanomata; Appl. Phys. Lett. 92 (2008) 021908.

DOI: 10.1063/1.2833699

[28] X. Xu, W. Ito, M. Tokunaga, R.Y. Umetsu, R. Kainuma and K. Ishida: Mat. Trans. 51 (2010) 1357.

[29] X. Xu, W. Ito, R.Y. Umetsu, R. Kainuma and K. Ishida: Appl. Phys. Lett. 95 (2009) 181905.

[30] W. Ito, R.Y. Umetsu, R. Kainuma, T. Kakeshita and K. Ishida: Scripta Mat. 63 (2010) 73.

[31] T.B. Massalski: Mat. Trans. 51 (2010) 583.

[32] T. Kakeshita, K. Kuroiwa, K. Shimizu, T. Ikeda, A. Yamagishi and M. Date: Mater. Trans. JIM 34 (1993) 415.

DOI: 10.2320/matertrans1989.34.415

[33] T. Kakeshita, K. Kuroiwa, K. Shimizu, T. Ikeda, A. Yamagishi and M. Date: Mater. Trans. JIM 34 (1993) 423.