Magnetostructural and magnetocaloric properties of bulk LaCrO3 system

TL;DR

This study investigates the magnetic and magnetocaloric properties of bulk LaCrO3, revealing weak ferromagnetism at room temperature and a significant entropy change near 290 K, relevant for magnetic cooling applications.

Contribution

It provides new insights into the magnetostructural behavior and magnetocaloric effect of LaCrO3, a GdFeO3-type perovskite, highlighting its potential for magnetic refrigeration.

Findings

Weak ferromagnetism at room temperature.

Broad magnetically-induced entropy change near 290 K.

Confirmation of non-zero net magnetic moment due to octahedral tilting.

Abstract

We studied the magnetic properties of bulk LaCrO3; a GdFeO3-type distorted perovskite, with a predominant antiferromagnetic phase transition at ~ 290 K. The bulk LaCrO3 exhibits intrinsic weak ferromagnetism at room temperature, which may arise due to the tilting of CrO6 octahedra, resulting in a non-zero net magnetic moment, as confirmed from the magnetization measurements. A broad magnetically-induced entropy change (-{\Delta}S) is observed with the maximum at 290 K, close to room temperature in LaCrO3 system.