Grain boundary plane distribution and its potential correlation with magnetic properties in hexagonal RCo5 permanent magnets

Abstract

Grain boundary plane distributions (GBPDs) are demonstrated to be spatially inhomogeneous in RCo5 permanent magnets. The potential effect of GBPDs on magnetic properties is proposed from major performance considerations, and approaches to exactly differentiate the boundary population are introduced. The crystallographic texture in permanent magnets should cover not only the texture of the crystals, but also the texture between crystals, which is helpful to advance the present understanding of the relationship between textures and properties in permanent magnets.