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Magnetocaloric properties of amorphous GdNiAl obtained by mechanical grinding

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Abstract

An amorphous GdNiAl sample was prepared by mechanical grinding performed on a crystallised intermetallic. The treatment changes greatly the ferromagnetic behaviour of this compound; its Curie temperature decreases from 57 K (unmilled sample) to 29 K (milled sample). Specific heat and magnetisation measurements reveal that amorphous GdNiAl exhibits an interesting magnetocaloric effect; for an applied magnetic field of 5 T a change of ≅8.9 J/kg K is observed at 36 K for the isothermal magnetic entropy.

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Authors and Affiliations

  1. Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), CNRS [UPR 9048], Université Bordeaux, 1, Avenue du Docteur A. Schweitzer, 33608, Pessac Cedex, France

    B. Chevalier & J.-L. Bobet

  2. CITIMAC, Facultad de Ciencias, Universidad de Cantabria, 39005, Santander, Spain

    J. Sánchez Marcos, J. Rodriguez Fernandez & J.C. Gómez Sal

Authors
  1. B. Chevalier
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  2. J.-L. Bobet
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  3. J. Sánchez Marcos
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  4. J. Rodriguez Fernandez
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  5. J.C. Gómez Sal
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Correspondence to B. Chevalier.

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PACS

75.30.Sg; 65.40.+g; 75.50.Kj

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Chevalier, B., Bobet, JL., Sánchez Marcos, J. et al. Magnetocaloric properties of amorphous GdNiAl obtained by mechanical grinding. Appl. Phys. A 80, 601–606 (2005). https://doi.org/10.1007/s00339-003-2239-9

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  • DOI: https://doi.org/10.1007/s00339-003-2239-9

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