Crystal-Field and Exchange Parameters Obtained from the High-Field Magnetization of ErFe 11 Ti: Revisited

We perform a high-field magnetization study for the single-crystalline ferrimagnetic ErFe 11 Ti compound in order to redefine the crystal-field and exchange parameters. For the first time, we predict theoretically the magnetization behavior of ErFe 11 Ti up to 100 T magnetic field. The latter allows us to observe the full magnetization process (up to the forced-ferromagnetic state) in ErFe 11 Ti. The results are compared with data for the hydride ErFe 11 TiH 1 .