MAYER, Charlotte; GAUDIN, Etienne; GORSSE, Stéphane; CHEVALIER, Bernard

doi:10.1016/j.jssc.2010.11.023

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MAYER, Charlotte
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GAUDIN, Etienne
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

GORSSE, Stéphane
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Solid State Chemistry. 2011, vol. 184, n° 2, p. 325-330

Elsevier

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Gd5CoSi2 was prepared by annealing at 1003 K. Its investigation by the X-ray powder diffraction shows that the ternary silicide crystallizes in a tetragonal structure deriving from the Cr5B3-type (I4/mcm space group; a=7.5799(4) and c=13.5091(12) Å as unit cell parameters). The Rietveld refinement shows a mixed occupancy on the (8h) site between Si and Co atoms. Magnetization and specific heat measurements performed on Gd5CoSi2 reveal a ferromagnetic behaviour below TC=168 K. This magnetic ordering is associated to an interesting magnetocaloric effect; the adiabatic temperature change ΔTad is about 3.1 and 5.9 K, respectively, for a magnetic field change of 2 and 4.6 T.< Leer menos

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The new ternary silicide Gd<sub>5</sub>CoSi<sub>2</sub>: Structural, magnetic and magnetocaloric properties

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