Ba-Ferrite Magneto-optical Recording Media

1 January 1987

journal article
Published by IOP Publishing in Japanese Journal of Applied Physics

Vol. 26 (S4)
https://doi.org/10.7567/jjaps.26s4.23

Abstract

We have studied on the application of Ba-ferrite(BaFe₁₂O₁₉) to magneto-optical recording. It was found that CoTi substituted Ba-ferrite(BaCo_xTi_xFe_12-2xO₁₉) films on GGG single crystals had Faraday rotation of 0.9deg/ µ m(λ=780nm) and Curie temperature of 320°C at X=0.9. And CoTi substituted Ba-ferrite films with the perpendicular magnetic anisotropy were obtained on glass substrate by using (111) orientated NiZn-ferrite(Ni_xZn_1-xFe₂O₄) films for under layer. From these results, Ba-ferrite magneto-optical recording medium which constitution is glass substrate, NiZn-ferrite under layer, CoTi substituted Ba-ferrite magnetic layer and stripe-shaped metal reflective layer for the guide tracks, is proposed from the optimization of each layer.

Keywords

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