Photoinduced disaccommodation in oxygen deficient yttrium iron garnet

Thermal Hysteresis of Photoinduced Magnetic Effect in Yttrium Iron Garnet

“…In this report, we observed a them\ hysteresis and the phenomenon of DA can be produced by white light irradiation in the high purity crystals of YIG [4] indicating of photoinduced formation and relaxation of a potential banier for photoexcited electron to return to an original state.…”

Photoinduced Optical Absorption in Bulk and Thin Film of Yttrium Iron Garnet

“…At room temperature, the ~a-effect disappears and it completely restore to the state of the specimens © 1994 by The Magnetics Society of Japan before irradiation. The fact that the critical temperature for the observation of a variety of photoinduced magnetic effects in YIG is 200 K favors the idea that the unique origin is common to these phenomena [4,5].…”

“…We now confine our attention to the II-effect, following their experiment in a bulk single crystal of and, for a comparison, a thin film of YIG in place of Si-or Ca-doped YIG. Our motivation to study the ~a-effect is to clear the underlying microscoPIc mechanism of photomducedmagnetic effect, i.e., photoinduced disaccommodation (a gradual decrease of initial per-meability with time after demagnetization due to the induced preferred direction in the domain walls) recently we observed in the same specimens ofYIG [5] .…”

Comparison between disaccommodation and ferromagnetic resonance measurements in polycrystalline yttrium–iron–garnet samples

“…These papers are mainly devoted to the aftereffect processes in single-crystal samples, [3][4][5] which in some cases are illuminated or gammaray irradiated. 6,7 Our group has performed experiments both in low frequency ͑1 kHz͒ and FMR frequencies ͑11 GHz͒. At 1 kHz, magnetic disaccommodation ͑DA͒ has been measured for several series of polycrystalline YIG, 8,9 FMR measurements are the purpose of the present article.…”