RELATIONSHIP BETWEEN THE MORPHOLOGY OF MAGHEMITE AND THE PROPERTIES OF MAGNETIC TAPES

An intelligent laboratory system for the determination of the relationship between maghemite morphology and the electroacoustic properties of magnetic tapes has been validated. Electron micrographs were evaluated with a TAS-Leitz image analyzer and structure-property relationships were determined by projection to latent structures and principal component analysis methods. The results of the computation show that the electroacoustic properties of a tape are mainly determined by the length of the maghemite particles. This conclusion is in good agreement with the empirical fact that acicular maghemite particles are the best ones for the production of magnetic tapes. The other results also correspond with experience and so the intelligent laboratory system for materials research on maghemite has been validated.