On the derivation of the magnetocaloric properties in ferrimagnetic spinel Mn3O4
S. Thota, F. Guillou, V. Hardy, A. Wahl, W. Prellier, J. Kumar
TL;DR
This paper investigates the magnetocaloric effect in Mn3O4 near its ferrimagnetic transition, deriving entropy changes from magnetic and calorimetric data, and analyzing complex magnetic phase transitions.
Contribution
It provides a detailed derivation of magnetocaloric properties in Mn3O4, highlighting the effects of magnetic phase transitions below TN.
Findings
Maximum entropy change | eltaS| of 11 J kg-1 K-1 at TN
Adiabatic temperature change of 1.9 K at TN
Additional features in eltaS(T) due to complex magnetic phases
Abstract
Large magnetocaloric effect has been observed in Mn3O4 around its ferrimagnetic transition at TN = 42.75 K. Field-induced isothermal entropy changes (\DeltaS) were derived from both magnetic and calorimetric techniques. The maximum |\DeltaS| and adiabatic temperature change ({\Delta}Tad) 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 \DeltaS(T).
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.