Multicaloric effect in multiferroic Y2CoMnO6

TL;DR

This study investigates the multicaloric effects in multiferroic Y2CoMnO6, demonstrating significant magnetocaloric and electrocaloric responses with potential for solid-state cooling applications.

Contribution

It provides the first detailed analysis of combined magnetocaloric and electrocaloric effects in Y2CoMnO6, highlighting its multicaloric properties without hysteresis losses.

Findings

Maximum magneto entropy change of ~7.3 J/kg K

Electric field driven entropy change of ~0.26 J/m^3 K

Estimated magnetically induced temperature change of 5.45 K

Abstract

We have investigated multiple caloric effects in multiferroic Y2CoMnO6. Polycrystalline sample prepared by solid state method has shown a ferromagnetic Curie temperature 75 K with second order phase transition; a maximum magneto entropy change -$\Delta$S_{Mmax}) of ~ 7.3 J/kg K with reasonable relative cooling power 220 J/kg is found without thermal and magnetic hysteresis loss. Electric field driven entropy change (-$\Delta$S_{Emax}) of ~ 0.26 J/m^3 K obtained using the Maxwells relation and estimated magnetically induced total temperature change of 5.45 K around Curie temperature that confirms the multicaloric effect in the sample.