Magnetic and magnetocaloric effect in the stuffed honeycomb antiferromagnet GdInO3 polycrystalline

TL;DR

This study investigates the magnetic and magnetocaloric properties of GdInO3, revealing significant reversible MCE near cryogenic temperatures and highlighting the effects of magnetic frustration on its performance.

Contribution

It provides the first detailed analysis of the magnetocaloric effect in GdInO3 polycrystalline, emphasizing the role of magnetic frustration in its properties.

Findings

No long-range magnetic order observed at 2.1 K

Large reversible magnetocaloric effect near cryogenic temperatures

Magnetic frustration reduces MCE performance compared to other Gd-based materials

Abstract

The magnetic and magnetocaloric (MCE) properties were studied in a stuffed honeycomb antiferromagnet GdInO3 polycrystalline. No long-range magnetic ordering was observed with only a sharp upturn in the temperature dependent magnetization curves at TN ~ 2.1 K. The large value of frustration index value ~ 5.0 suggests short-range antiferromagnetic interactions existing between the Gd3+ moments in this frustrated magnetic system. Negligible thermal and magnetic hysteresis suggest a second-order feature of phase transition and a reversible magnetocaloric effect (MCE) in GdInO3 compound. In the magnetic field changes of 0-50 kOe and 0-70 kOe, the maximum magnetic entropy change values are 9.31 J/kg K and 17.53 J/kg K near the liquid helium temperature, with the corresponding RCP values of 106.61 and 196.38 J/kg, respectively. The relative lower MCE performance of GdInO3 polycrystalline than the other Gd-based magnetocaloric effect is understood by the high magnetic frustration in this system. Our investigation results reveal GdInO3 polycrystalline has a large reversible MCE, which not only provides another possibility of exploiting magnetocaloric refrigerants in the frustrated magnetic systems near the cryogenic temperature region, but also serves to excavate more exotic properties in the frustrated stuffed honeycomb magnetic systems.