PHOTOINDUCED IRREVERSIBLE EFFECTS ON MAGNETIC PROPER TIES AND ALLIED PHENOMENAIN MAGNETIC OXID ES XI

概要

論文の詳細を見る
A review is presented of the various experimental results that have thus far been developed for the study of disaccommodation (DA) in a single crystals of y ttrium iron garnet in 1998,which is irradiated with laser (the most effective wavelength is 700 nm) or white light at 77K. Then, a remarkable change of the temperature dependence of complex permeabilities and is observed, which is specific to photoinduced magnetic effect. Simultaneously, conspicuous double peaks of DA around 125 K and 250 K below room temperature were found to be induced by light-irradiation, with correlative onset of the irreversible decrease of permeability sensitive to demagnetization at low temperature. Furthermore, photoinduced Accommodation is observed in this sample at comparatively high frequency for the first time. In addition, three peaks of (DA) in poly cry stalline CaVIn-garnet have been for the first time observed, double peaks. in order to explain these observations, we propose that oxygen defects provide a mechanism for occurrence of photomagnetic effects and discussion of its validity; the review of these area of our laboratories in 1998 is given. On the basis of these results a model for the photoinduced magnetic after effects of YIG is proposed and discussed.
神奈川歯科大学の論文
1998-03-31