MAGNETIC PROPERTIES OF Fe//3 (Al//0 //. //4 Si//0 //. //6 ) ALLOY SINGLE CRYSTAL WITH DO//3 STRUCTURES.

To determine the relationship between the degree of order in the DO//3 phase and the soft magnetic properties of Sendust alloy, samples were annealed at 1200 degree C for two hours and then either slowly cooled to room temperature or rapidly quenched. The magnetic properties were then measured. Bright-field micrographs showed both types of alloy to have a DO//3 structure, but with much greater order in the slowly cooled than in the quenched sample. The temperature dependence of the anisotropy constant K//1 changed greatly with the degree of order.