Large magnetocaloric effect in geometrically frustrated polycrystalline ErMnO3 compound at cryogenic temperature

In this manuscript we report significantly large magnetocaloric effect in the cryogenic temperature region for the chemically stable polycrystalline ErMnO3 compound. For this compound, the antiferromagnetic transition temperature of the Mn3+ ions is nearly T ∼ 75 K. However, the large non saturating magnetization and magnetocaloric effect are found at a temperature lower than 20 K. Such non saturating nature of magnetization and magnetic entropy changes for the application of external magnetic field is addressed by considering the gradual alignments of dominant paramagnetic moments caused by Er3+ ions.