Probing the tunability of magnetism with external pressure in metastable Sr2NiIrO6 double perovskite

Laguna-Marco, M. ; Arias-Egido, E. ; Cuartero, V. (Universidad de Zaragoza) ; Herrero-Albillos, J. (Universidad de Zaragoza) ; Kayser, P. ; Alonso, J. A. ; Fabbris, G. ; Haskel, D. ; Irifune, T.

Resumen: In Sr2NiIrO6 long-range Ir-Ir antiferromagnetic exchange interactions have been reported to overcome the ferromagnetic Ni-Ir interactions hampering the otherwise expected ferromagnetic behavior. Prompted by this, a combination of x-ray absorption spectroscopy and x-ray diffraction at high pressure is used here to investigate the interplay between the magnetic structure of the Ir sublattice and lattice degrees of freedom. The compression of Sr2NiIrO6 drives an unexpected nonmonotonic change of the x-ray magnetic circular dichroism (XMCD) spectra: The intensity first decreases in the 0- to 18-GPa range, then shows an increase in the 18- to 30-GPa range and again decreases for higher pressures. The XMCD intensity, a measure of the net magnetization in the Ir sublattice, however, is found to remain very low in the whole pressure range so the observed changes do not correspond with a transition from antiferromagnetic to ferromagnetic or ferrimagnetic order. The evolution of the XMCD is better explained in terms of a weakening/strengthening of the long-range antiferromagnetic (AFM) Ir-Ir interaction between ferromagnetic planes associated with the reduction of the lattice parameters. In particular, a correlation can be established between the evolution of the b/a ratio and the weakening/strengthening of the AFM interaction. © 2022 American Physical Society.

Idioma: Inglés

DOI: 10.1103/PhysRevB.105.064421

Año: 2022

Publicado en: Physical Review B 105, 6 (2022), 064421 [8 pp]
ISSN: 2469-9950

Factor impacto JCR: 3.7 (2022)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 157 / 343 = 0.458 (2022) - Q2 - T2
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 24 / 67 = 0.358 (2022) - Q2 - T2
Categ. JCR: PHYSICS, APPLIED rank: 50 / 160 = 0.312 (2022) - Q2 - T1

Factor impacto CITESCORE: 6.7 - Physics and Astronomy (Q1) - Materials Science (Q1)

Factor impacto SCIMAGO: 1.468 - Electronic, Optical and Magnetic Materials (Q1) - Condensed Matter Physics (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-20R RASMIA
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-115159GB-I00
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-54425-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2017-83468-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)