Abstract:
The luminescence of intrinsic defects of yttrium aluminum garnet in the ultraviolet range under electron beam irradiation is studied. The cathodoluminescence spectra of single crystals and ceramics based on yttrium aluminum garnet are obtained and interpreted. It is shown that the spectra of all samples consist of three luminescence bands, two of which are associated with Y$_{\mathrm{Al}}^{\mathrm{oct}}$ antisite defects. It is noted that in ceramics the band associated with another type of point defect makes a greater contribution to luminescence than in single crystals.
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