Abstract: We study the electronic structure of the Sr2YRuO6 and Sr2YRu0.75Ir0.25O6 compounds using x-ray (resonant) photoemission and absorption spectroscopies. The experimental results are interpreted with first-principles calculations, which give a good agreement with all the spectra. These results show that, although the spin-orbit coupling does not induce orbital anisotropies in these systems, it is responsible for the reduction of magnetic moments within the the Ir5+ O-6 octahedra, weakening the magnetic ordering in the substituted system. Finally, our findings support the idea that the canting of Ru5+ magnetic moments actually plays an important role in the stabilization of the intriguing magnetic ordering in the Sr2YRuO6 compound.
Author(s): Guedes, E. B.; Abbate, M.; Abud, F.; et al.
O Laboratório Aberto de Interatividade para Disseminação do Conhecimento Científico e Tecnológico (LAbI), vinculado à Universidade Federal de São Carlos (UFSCar), é voltado à prática da divulgação científica pautada na interatividade; nas relações entre Ciência, Arte e Tecnologia.
Writers: R. C. de Oliveira, L. Gracia, M. Assis, M. Siu Li, J. Andres, E. Longo and L. S. Cavalcante Keywords: crystals; electronic structure; optical properties Abstract: This work combines experimental and computational techniques to exploit the best of both methodologies […]
Spin dynamics and two-dimensional correlations in the fcc antiferromagnetic Sr2YRuO6 Abstract: The face-centered-cubic (fcc) lattice of Ru5+ spins in the double perovskite Sr2YRuO6 shows a delicate, three-dimensional antiferromagnetic (AFM) ground state composed of stacked square AFM […]
Writers: T.C. Porfirio and E.N.S. Muccillo Keywords: A. Sintering; C. Dielectric properties; D. Perovskites; E. Capacitors Abstract: The effects of small amounts of lithium fluoride sintering aid on the microstructure and dielectric properties of CaCu3Ti4O12 (CCTO) ceramics were […]