Investigation on the magnetocaloric effect in TbN compound

• Published in: Journal of magnetism and magnetic materials 2013-09, Vol.341, p.138-141
• Main Authors: von Ranke, P.J., Alvarenga, T.S.T., Nóbrega, E.P., Alho, B.P., Ribeiro, P.O., Carvalho, A. Magnus G., de Sousa, V.S.R., Caldas, A., de Oliveira, N.A.
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystal structure; Crystalline electrical field; Entropy; Exact sciences and technology; Ground state; Inverse; Magnetic materials; Magnetic properties and materials; Magnetically ordered materials: other intrinsic properties; Magnetism; Magnetocaloric effect, magnetic cooling; Materials science; Mathematical analysis; Physics; Rare earth compound; Spin reorientation transition
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2013.04.035

One of the biggest challenges in materials science is to understand the microscopic mechanisms responsible in storage and release material entropy. TbN compound, which presents non-degeneracy in ground state, was studied and the calculated magnetocaloric effect is in good agreement with the recent experimental data. Also inverse magnetocaloric effect and spin reorientation transition were predicted in TbN. The theoretical investigations were carried out using a Hamiltonian, which includes the crystalline electrical field, Zeeman and exchange interactions. •Theoretical description of the magnetocaloric effect in TbN.•Influence of the crystalline electrical field anisotropy on TbN.•Predictions of inverse and anomalous magnetocaloric effect in TbN.