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Dynamics of the first-order magnetostructural transition in Gd5(Si x Ge1-x )4

  • F. Casanova
  • A. LabartaEmail author
  • X. Batlle
  • E. Vives
  • J. Marcos
  • L. Mañosa
  • A. Planes
Article

Abstract.

The dynamics at a mesoscopic scale of the first-order magnetostructural transition in a Gd5(Si x Ge1-x )4 alloy with x = 0.05 is studied. We examine the effect of inducing the transition either by T or H on the entropy change. In addition, we analyse the avalanches between metastable states during the transition. The athermal character of the transition is evidenced. It is also shown that cycling through the transition leads to a reproducible pattern with no characteristic size of the avalanches.

Keywords

Entropy Characteristic Size Metastable State Entropy Change Reproducible Pattern 
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. 1.
    A.M. Tishin, Y.I. Spichkin, The magnetocaloric effect and its applications (Institute of Physics Publishing, Bristol and Philadelphia, 2003)Google Scholar
  2. 2.
    V.K. Pecharsky, K.A. Gschneidner, Jr., Phys. Rev. Lett. 78, 4494 (1997)Google Scholar
  3. 3.
    V.K. Pecharsky, K.A. Gschneidner, Jr., Appl. Phys. Lett. 70, 3299 (1997)CrossRefGoogle Scholar
  4. 4.
    H. Wada, Y. Tanabe, Appl. Phys. Lett. 79, 3302 (2001)CrossRefGoogle Scholar
  5. 5.
    O. Tegus, E. Brück, K.H.J. Buschow, F.R. de Boer, Nature 415, 450 (2002)CrossRefGoogle Scholar
  6. 6.
    F.X. Hu, B.G. Shen, J.R. Sun, Z.H. Cheng, G.H. Rao, X.X. Zhang, Appl. Phys. Lett. 78, 3675 (2001)CrossRefGoogle Scholar
  7. 7.
    S. Fujieda, A. Fujita, K. Fukamichi, Appl. Phys. Lett. 81, 1276 (2002)CrossRefGoogle Scholar
  8. 8.
    V.K. Pecharsky, K.A. Gschneidner, Jr., J. Alloys Comp. 260, 98 (1997)CrossRefGoogle Scholar
  9. 9.
    L. Morellon, J. Blasco, P.A. Algarabel, M.R. Ibarra, Phys. Rev. B 62, 1022 (2000)CrossRefGoogle Scholar
  10. 10.
    F. Casanova, A. Labarta, X. Batlle, J. Marcos, Ll. Mañosa, A. Planes, S. de Brion, Phys. Rev. B 69, 104416 (2004)CrossRefGoogle Scholar
  11. 11.
    J. Marcos, F. Casanova, X. Batlle, A. Labarta, A. Planes, Ll. Mañosa, Rev. Sci. Inst. 74, 4768 (2003)CrossRefGoogle Scholar
  12. 12.
    F. Casanova, X. Batlle, A. Labarta, J. Marcos, Ll. Mañosa, A. Planes, Phys. Rev. B 66, 100401(R) (2002)CrossRefGoogle Scholar
  13. 13.
    F. Casanova, X. Batlle, A. Labarta, J. Marcos, Ll. Mañosa, A. Planes, Phys. Rev. B 66, 212402 (2002)CrossRefGoogle Scholar
  14. 14.
    F.J. Pérez-Reche, E. Vives, Ll. Mañosa, A. Planes, Phys. Rev. Lett. 87, 195701 (2001)CrossRefGoogle Scholar
  15. 15.
    E. Vives, J. Ortín, Ll. Mañosa, I. Ráfols, R. Pérez-Magrané, A. Planes, Phys. Rev. Lett. 72, 1694 (1994)CrossRefGoogle Scholar
  16. 16.
    L. Carrillo, Ll. Mañosa, J. Ortín, A. Planes, E. Vives, Phys. Rev. Lett. 81, 1889 (1998)CrossRefGoogle Scholar
  17. 17.
    R. Vergne, J.C. Cotillard, J.L. Porteseil, Rev. Phys. Appl. 16, 847 (1981)Google Scholar
  18. 18.
    V. Hardy, S. Majumdar, S.J. Crowe, M.R. Lees, D.M. Paul, L. Hervé, A. Maignan, S. Hébert, C. Martin, C. Yaicle, M. Hervieu, B. Raveau, Phys. Rev. B 69, 020407(R) (2004)CrossRefGoogle Scholar
  19. 19.
    M.W. Zemansky, R.H. Dittman, Heat and thermodynamics, 6th ed. (McGraw-Hill, New York, 1981)Google Scholar
  20. 20.
    The rate \(\dot{H}=0.1\) T/min was optimal taking into account the sampling rate of the calorimeter, which is 0.25 Hz. This \(\dot{H}\) enables us to observe the detailed structure of the calorimetric curve while the signal of the sensors is strong enough to be recorded above the noiseGoogle Scholar
  21. 21.
    F.J. Pérez-Reche, M. Stipcich, E. Vives, Ll. Mañosa, A. Planes, M. Morin, Phys. Rev. B 69, 064101 (2004)CrossRefGoogle Scholar
  22. 22.
    E. Vives, A. Planes, Phys. Rev. B 50, 3839 (1994)CrossRefGoogle Scholar
  23. 23.
    R. Barlow, Statistics (Wiley, New York, 1989)Google Scholar
  24. 24.
    E.M. Levin, A.O. Pecharsky, V.K. Pecharsky, K.A. Gschneidner, Jr., Phys. Rev. B 63, 064426 (2001)CrossRefGoogle Scholar
  25. 25.
    J.B. Sousa, M.E. Braga, F.C. Correia, F. Carpinteiro, L. Morellon, P.A. Algarabel, M.R. Ibarra, Phys. Rev. B 67, 134416 (2003)CrossRefGoogle Scholar
  26. 26.
    J.B. Sousa, M.E. Braga, F.C. Correia, F. Carpinteiro, L. Morellon, P.A. Algarabel, M.R. Ibarra, J. Appl. Phys. 91, 4457 (2002)Google Scholar

Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • F. Casanova
    • 1
  • A. Labarta
    • 1
    Email author
  • X. Batlle
    • 1
  • E. Vives
    • 2
  • J. Marcos
    • 2
  • L. Mañosa
    • 2
  • A. Planes
    • 2
  1. 1.Departament de Física FonamentalUniversitat de BarcelonaBarcelona, CataloniaSpain
  2. 2.Departament d’Estructura i Constituents de la MatériaUniversitat de BarcelonaBarcelona, CataloniaSpain

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