Photomagnetism in Ca2+Fe4+-doped yttrium iron garnet.

Focuses on a study which measured the temperature and time dependence of the initial susceptibility of the optical magnetization curve on epitaxial films of nominally pure yttrium iron garnet during illumination with white light after cooling in the dark. Maximum temperature for the occurrence of the light-induced effects on the susceptibility; Process of the change to low-susceptibility state by light excitation; Interpretation of results.