ИСТИНА

Gahnite with various particles size was synthesized from boehmite of different particles sizes via interaction with zinc oxide or zinc acetate. It was found that the decrease of the size of gahnite particles is accompanied by decrease of the crystallite size, change of the state of oxygen vacancies and optical properties. The UV light absorption decreases, the blue-shift of an absorption edge is observed, the luminescence of gahnite and Eu3+ ions in gahnite changes.