Bulk anisotropic nanocrystalline SmCo6.6Ti0.4 permanent magnets

Crystallographic anisotropy is essentially important for improving the remanence of nanocrystalline TbCu7-type Sm–Co magnets. The powder precursor produced by surfactant-assisted high-energy ball milling consists of out-of-plane [0 0 1]-textured submicron flakes with fine nanograins. The crystallographically oriented bulk SmCo6.6Ti0.4 magnets are composed of nanograins with average grain size of ∼38 nm. An enhanced remanence ratio of up to 0.80 originating from the crystallographic anisotropy was achieved in the nanocrystalline bulks.