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.
Study of structural and optical properties of CaMoO4 nanoparticles synthesized by the microwave-assisted solvothermal method Abstract: Calcium molybdate (CaMoO4) nanoparticles were synthesized by using a rapid assisted-microwave solvothermal method. X-ray diffraction measurements, Fourier transform Raman and […]
Role of Dipolar Interactions and Volume Particle Size Distribution on the Nonmonotonic Magnetic Field Dependence of the Blocking Temperature in Magnetic Nanoparticles Abstract: The nonmonotonic behavior of the magnetic field dependence H of the superparamagnetic blocking […]
Writers: Rafael A. Ferreira, Maria E. dos Santos, Cássio Morilla-Santos, Ronan Lebullenger, Octavio Peña, Paulo N. Lisboa-Filho Keywords: : Powders: chemical preparation; X-ray methods; Magnetic properties; Perovskites Abstract: Polycrystalline oxide materials with nominal compositions BiMn2O5 and Bi0.9Eu0.1Mn2O5were obtained […]