Relation Between High Field Magnetization and Microstructure in Bulk SmCo2.5Cu2.5

This paper presents results from microstructure investigation and magnetization measurements up to 50 T in bulk SmCo2.5Cu2.5 to elucidate the occurrence of the high field transition.The difference in the microstructures of both samples is clearly visible. In sample A, different compositions exist within the grains. On the other hand, the grains of sample B consist of a homogeneous composition. Only sample A shows the field induced change in magnetization value at Hu at increasing field and at Hd at decreasing field.