Giant Magnetocaloric Effect in Gd5(Si2Ge2)

Phys. Rev. Lett. 78, 4494 – Published 9 June 1997
V. K. Pecharsky and K. A. Gschneidner, Jr.


An extremely large magnetic entropy change has been discovered in Gd 5(Si 2Ge 2) when subjected to a change in the magnetic field. It exceeds the reversible (with respect to an alternating magnetic field) magnetocaloric effect in any known magnetic material by at least a factor of 2, and it is due to a first order [ferromagnetic(I)ferromagnetic(II)] phase transition at 276 K and its unique magnetic field dependence.


  • Received 22 November 1996
  • Published in the issue dated 9 June 1997

© 1997 The American Physical Society

Authors & Affiliations

V. K. Pecharsky and K. A. Gschneidner, Jr.

  • Ames Laboratory and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011-3020

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