Hard magnetic colloidal nanoplates with tunable size for magneto-optical applications

Abstract

We have synthesized highly anisotropic plate-like nanoparticles of aluminum-substituted strontium hexaferrite via the crystallization of 4Na₂O×9SrO×5.5Fe₂O₃×4.5Al₂O₃×4B₂O₃ glass, achieving tunable sizes by adjusting the annealing temperature (650–750 °C). Plate sizes range...