Giant conventional and rotating magnetocaloric effects in TbScO3 single crystal

Magnetocaloric effect (MCE) shows great potential in refrigeration field and especially fundamental scientific research with cooling requirement. In this work, we studied the anisotropic magnetic and magnetocaloric properties of TbScO3 single crystal, a popular substrate used for depositing epitaxial ferroelectric films. Our results indicate a strong antiferromagnetic ordering below T-N similar to 3.1 K in orthorhombic TbScO3 single crystal. Large magnetocrystalline anisotropy exists between the magnetic easy ab plane and the hard c axis, leading to a giant anisotropic MCE. In field changes of 20 and 50 kOe along the a axis, large magnetic entropy changes reach 15.25 and 23.71 J/kg K at 3 K and 7 K, respectively, while the magnetic entropy changes along the c axis are negligible. As a result, large rotating magnetic entropy changes of 15.27 and 23.63 J/kg K are obtained by rotating TbScO3 single crystal with constant fields of 20 and 50 kOe lying in the ac plane. The large anisotropic MCE of TbScO3 single crystal indicates this material as a promise refrigerant candidate for rotating magnetic refrigeration technique near the helium temperature. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

The study investigated the anisotropic magnetic and magnetocaloric properties of TbScO3 single crystal, revealing strong antiferromagnetic ordering and a giant anisotropic magnetocaloric effect. TbScO3 single crystal shows potential as a promising refrigerant candidate for rotating magnetic refrigeration techniques near the helium temperature.