Preferred Orientations of Commercial Magnetic Recording Tapes

The ferromagnetic powders dispersed in coating surfaces of commercial broadcast video tapes were exa-mined using X-ray diffraction and Mossbauer technique. X-ray diffraction of the coatings showed the presence of preferred orientation having [110] parallel to an alignment direction on the plane of the tape surface. For the majority of particles examined the easy direction was also parallel to the above direction. These results are compared with those obtained by electrical conductivity measurements.