Ba doping and rapid cooling effects on coercivity of Bi-Dy-Al-Fe garnet films for magneto-optical recording prepared by pyrolysis

Itoh, Akiyoshi; Kryder, Mark H.
September 1988
Applied Physics Letters;9/19/1988, Vol. 53 Issue 12, p1125
Academic Journal
Al-doped Bi-Dy iron garnet films have been fabricated by the pyrolysis method on glass substrates, and the effects of Ba doping and rapid cooling on the coercivity (Hc) were investigated. Films were quenched from 660 °C to room temperature within about 120 s. Rapid cooling causes a rise of Hc, and a small amount of Ba doping enhances this effect. Hc values near 4200 Oe at room temperature were obtained in rapidly cooled films with the composition Bi1Dy1.96Ba0.04Fe4.4Al0.6O12.


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