Anisotropic exchange coupling interaction between hard–hard magnetic grains in sintered SrFe ₁₂O ₁₉ ferrites

The exchange coupling interaction in sintered magnetic materials is generally isotropic. In this study, an anisotropic was found the oblate cylindrical SrFe12O19 specimens obtained by using nanopowders synthesized via a hydrothermal method. According to Henkel plots, between hard-hard grains both as-pressed and specimens. However, can only be in-plane but not out-of-plane direction for Through building model of grain configuration, anisotropy ascribed vertically arranged plate-like with micrometers width nanometers thickness, which confirmed morphology cross section fractured