Magnetic inversion symmetry breaking and spin reorientation in Tb2MnNiO6: A polar strong ferromagnet

Garcia-Muñoz, José Luis ; Blasco, Javier (Universidad de Zaragoza) ; Zhang, Xiaodong ; Fabelo, Oscar

Resumen: We report a description and comprehensive study on four successive magnetic transitions in ferromagnetic Tb2MnNiO6 double perovskite. In the ground state (P2(1)''), the moments of magnetic A and B sites order according to different nonpolar magnetic modes, but the coupling between them generates an overall polar symmetry which makes this oxide potentially multiferroic due to magnetic trilinear coupling, and therefore ferromagnetic and ferroelectric in its ground state. Its macroscopic magnetization is large (5 mu B/f.u) and not related to a weak ferromagnetic component induced by Dzyaloshinskii-Moriya interaction. However, a sharp and severe spin reorientation of the ferromagnetic transition-metal moments has been observed which opens the door to the magnetic switching of the ferroelectric state in this perovskite, and conversely to the control of the magnetization direction by electrical fields applied parallel to b. We also anticipate that in this material the direction of the magnetization (towards c/a) could be used as the key to switch the polar/nonpolar (ferroelectric/antiferroelectric) transformation.

Idioma: Inglés

DOI: 10.1103/PhysRevB.99.184444

Año: 2019

Publicado en: PHYSICAL REVIEW B 99, 18 (2019), [9 pp.]
ISSN: 2469-9950

Factor impacto SCIMAGO: 1.811 - Electronic, Optical and Magnetic Materials (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68760-C2-1
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68760-C2-2-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RTI2018-098537-B-C21
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RTI2018-098537-B-C22
Financiación: info:eu-repo/grantAgreement/ES/MINECO/SEV-2015-0496

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)