Friday, July 12, 2013

1307.3194 (L. Caron et al.)

Tuning the giant inverse magnetocaloric effect in Mn2-xCrxSb compounds    [PDF]

L. Caron, X. F. Miao, J. C. P Klaasse, S. Gama, E. Brück
Structural, magnetic and magnetocaloric properties of Mn2-xCrxSb compounds have been studied. In these compounds a first order magnetic phase transition from the ferrimagnetic to the antiferromagnetic state occurs with decreasing temperature, giving rise to giant inverse magnetocaloric effects that can be tuned over a wide temperature interval through changes in substitution concentration. Entropy changes as high as 7.5 J/kgK have been observed, and a composition independent entropy change is obtained for several different concentrations/working temperatures, making these compounds suitable candidates for a composite working material.
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