Large magnetocaloric effect in spinel CdCr2S4

Abstract

Published by the AIP Publishing Articles you may be interested inEffects of Cr substitution on structural and magnetic properties in La0.7Pr0.3Fe11.4Si1.6 compound J. Appl. Phys. 115, 17A942 (2014); 10.1063/1.4868703 3d-4f spin interaction induced giant magnetocaloric effect in zircon-type DyCrO4 and HoCrO4 compounds Appl. Phys. Lett. 103, 092402 (2013); 10.1063/1.4819768 Study of the magnetic transition and large magnetocaloric effect in DyCo3B2 compoundMagnetocaloric effect in CdCr 2 S 4 was investigated by magnetization and heat capacity measurements. CdCr 2 S 4 is of a cubic spinel structure with soft ferromagnetism and performs reversible magnetic entropy in the whole experimental temperature range from 56 to 128 K. A large magnetic entropy change ϳ7.04 J / kg K and adiabatic temperature change ⌬T ad ϳ 2.6 K are revealed for a field change of 0 -5 T near the Curie temperature of 87 K. These results suggest that sulfospinel probably is a promising candidate as working material in magnetic refrigeration technology.

Magnetic properties and magnetic entropy change in spinels (Cd,M)Cr2S4 with M=Cu or Fe

“…11 Very recently, our studies revealed that CdCr 2 S 4 could also be a promising candidate for magnetic refrigerant because of its large MCE. 13 A maximum value of ⌬S is found to be 7 J/ kg K for a field change of 0 -5 T around its Curie temperature. In the present paper, we report on the effects of substitution of Cu and Fe for Cd in CdCr 2 S 4 on magnetic properties and magnetic entropy changes.…”

“…The Curie temperature T C is defined as the temperature with a maximum slope in the M-T curves. The value of T C for CdCr 2 S 4 is 86 K. 13 The partial replacement of Cd by Cu can exert a little influence on the magnetic coupling, and only a small shift of T C from 86 to 88 K is observed. In contrast, a significant increase of T C from 86 to 119 K is observed, which stems from the substitution of Fe for Cd.…”

Magnetic ordering in the frustrated system FeSc2S4

“…The AB 2 X 4 -type magnetic spinels have attracted much attention due to their colossal magnetocapacity effects and magnetoresistance effects [1]. CuCr 2 Se 4 , CdCr 2 Se 4 and CoFe 2 O 4 are known to show metallic conduction and large magneto-optical effect [2,3].…”

Recent Progress in Exploring Magnetocaloric Materials

“…[108] CdCr 2 S 4 is a member of the chalcogenide ACr 2 S 4 spinels with ferromagnetically coupled Cr 3+ spins (S=3/2). Recently, Yan et al [109] studied the magnetocaloric effects of CdCr 2 S 4 . A polycrystalline CdCr 2 S 4 sample was fabricated by using the solid-state reaction method.…”