Spectral dependence of photoinduced optical absorption in doped yttrium iron garnet single crystals

Stress Dependence of Photoinduced Magnetostriction in Yttrium Iron Garnets

“…YIG(Pb) (second group) reveals only the photoinduced domain redistribution. [11], [18] and the present paper show that the basic characteristics of this crystal do not undergo any photoinduced change.…”

“…When the collective character of the magnetic exchange is taken into account, it becomes clear that the photomagnetic YIG single crystals form two different groups: first -single crystals with defects, changing the magnetic exchange parameters of the ideal crystal (YIG(Ba) and YIG(Si) in the present paper) and second -single crystals with defects, that do not influence the magnetic exchange (in the present paper it is YIG(Pb)). Single crystals of the first group reveal the photoinduced changes of the general magnetic, elastic and magnetoelastic parameters, such as magnetistrictive constants [11], internal trigonal stresses (the present paper), cubic anisotropy [18], magnetic permeability [9]. YIG(Pb) (second group) reveals only the photoinduced domain redistribution.…”