On the derivation of the magnetocaloric properties in ferrimagnetic spinel Mn3O4 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Applied Physics Année : 2011

On the derivation of the magnetocaloric properties in ferrimagnetic spinel Mn3O4

Résumé

Large magnetocaloric effect has been observed in Mn3O4 around its ferrimagnetic transition at TN = 42.75 K. Field-induced isothermal entropy changes (ΔS) were derived from both magnetic and calorimetric techniques. The maximum |ΔS| and adiabatic temperature change (ΔTad) at TN are 11 J kg−1 K−1 and 1.9 K, respectively, for a magnetic field change of 20 kOe. Moreover, it is found that the complex magnetic phase transitions taking place below TN produce additional--but smaller--features on ΔS(T).

Dates et versions

hal-00686582 , version 1 (10-04-2012)

Identifiants

Citer

S. Thota, François Guillou, Vincent Hardy, A. Wahl, Wilfrid Prellier, et al.. On the derivation of the magnetocaloric properties in ferrimagnetic spinel Mn3O4. Journal of Applied Physics, 2011, 109, pp.053902. ⟨10.1063/1.3549706⟩. ⟨hal-00686582⟩
43 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More