Photoinduced Irreversible Effects on Magnetic Properties and Allied Phenomena in Magnetic Oxides. I

This is a survey of the photoinduced irreversible effects and related phenomena in magnetic oxides, mainly YIG. Although several pictures on these phenomena and an plausible explanation have been proposed, these have not been established as yet. This survey will concentrate on the authors\u27 experiments and pictures of these subjects, rather than the other researcher\u27s. This is roughly divided into the four separate parts; I. Experimental, II. Photoinduced irreversible permeability effect, III. Allied phenomena, IV. Conclusive discussion