Spin–lattice correlation in Eu3+ doped antiferromagnet TmFeO3

Abstract

We report the physical properties of Eu-doped bulk TmFeO₃ through X-ray diffraction, magnetic susceptibility (χ), Raman scattering and X-ray absorption spectroscopy (XAS) study, which shows a similar orthorhombic structure with the Pbnm space group as TmFeO₃. Magnetic measurement on Eu-doped TmFeO₃ provides evidence for spin reorientations of Fe³⁺. Further, the Raman spectra of Eu³⁺ doped TmFeO₃ show significant changes in Raman modes as a function of temperature, which are evidence for strong spin–lattice interaction. From the XAS spectra, the L-edge of Fe provides information on the valence state of Fe, whereas the K-edge of oxygen shows that the compound has a strong influence on the hybridization of the O(2p) state with the 3d states of Fe.