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.
Ferroelectricity in the 1 μC cm−2 range induced by canted antiferromagnetism in (LaMn3)Mn4O12 Abstract: Pyroelectric current and field-dependent specific heat measurements on polycrystalline samples of the quadruple perovskite (LaMn3)Mn4O12 give evidence of ferroelectricity driven by the canted antiferromagnetic […]
Writers: Ivo M. Pinatti and Tatiana M. Mazzo and Rosana F. Gonçalves and José A. Varela and Elson Longo and Ieda L.V. Rosa Keywords: Hydrothermal Microwave; Calcium titanate; Samarium; Photoluminescence Abstract: Calcium titanate (CaTiO3 – CT) and samarium […]
Influence of small amounts of gallium oxide addition on ionic conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-δ solid electrolyte Abstract: The effects of small amounts of gallium oxide on intragrain and intergrain conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-δ are investigated by impedance spectroscopy in the […]