EFFECTS OF DISPERSION ON INTERACTION AND ORIENTATION IN BARIUM FERRITE TAPES

Interactions between Ba-ferrite particles have been examined from meas urements of remanence curves. Hand-spread tapes with different degrees of orientation, controlled by the orientation field and milling time, have been studied. The results show that the effect of the orientatio n field is to improve the easy axis distribution. Thus, as milling pro ceeds, squareness, the peak value of the Delta I(H) curve and the degr ee of easy axis orientation, all increase. Towards the end of the mill ing process, the tendency to stack is reduced as the dispersion qualit y improves and this reduces the orientational texture.