Relation of magnetic properties to structural perfection in alnico single crystals

Some results of an exploration of the relation of crystallographic structural perfection of Alnico single crystals and their magnetic properties are presented. Chemical and physical heterogeneity of the single crystal structure is shown to increase with transition from Alnico 5 to Alnico VS55. Increase of the temperature gradient in the melt and the drawing rate contributes to increasing the structural perfection of single crystals, and their magnetic properties.