Magnetostructural coupling in RFeO₃ (R = Nd, Tb, Eu and Gd).

ABSTRACT: We investigate the interplay of magnetization and lattice vibrations in rare-earth orthoferrites RFeO₃, with a specific focus on non-symmetry-breaking anomalies. To do so, we study the magnetization, magnon excitations and lattice dynamics as a function of temperature in NdFeO₃, TbFeO₃, EuFeO₃ and GdFeO₃. The magnetization shows distinct temperature anomalous behavior for all investigated rare-earth orthoferrites, even in the compounds with no phase transitions occurring at those temperatures. Through spin-phonon coupling, these magnetic changes are mirrored by the FeO₆ rotation mode for all the studied RFeO₃, revealing a common magnetostructural effect associated with the octahedra rotations. The R³⁺ o

SUBMITTER: Vilarinho R 

PROVIDER: S-EPMC9188583 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature