Magnetic Properties and Magnetocaloric Effect of Gd3Ni in Crystalline and Amorphous States

D.A. Shishkin; N.V. Baranov; A.V. Proshkin; S.V. Andreev; A.S. Volegov

doi:10.4028/www.scientific.net/SSP.190.355

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Magnetic Properties and Magnetocaloric Effect of Gd₃Ni in Crystalline and Amorphous States

Abstract:

The liquid quenched Gd₃Ni alloy is observed to exhibit a ferromagnetic behavior below T_C= 117 K unlike crystalline compound having an antiferromagnetic order at T < T_N = 99 K. Rapid quenching from the melt results in a considerable enhancement of the magnetocaloric effect in Gd₃Ni at low magnetic fields. The maximal value of the isothermal magnetic entropy change at a magnetic field change of 20 kOe for the amorphous Gd₃Ni surpasses by more than 8 times the S_M value for the polycrystalline counterpart. The relative cooling power for the amorphous Gd₃Ni alloy is estimated as 265 J kg^-1 and 676 J kg^-1 at a magnetic field change of 20 kOe and 50 kOe, respectively.

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Solid State Phenomena (Volume 190)

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355-358

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.190.355

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Online since:

June 2012

Authors:

D.A. Shishkin, N.V. Baranov, A.V. Proshkin, S.V. Andreev, A.S. Volegov

Keywords:

Amorphous Alloys, Magnetocaloric Effect

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