[13p-A25-1~12] 9.5 New functional materials and new phenomena

[13p-A25-11] Crystallographic and Spectroscopic Characteristics of Co²⁺ Doped MAl₂O₄ (M = Zn, Mg)

〇Takayuki Nakane¹, Takashi Naka¹, Yoshitaka Matsushita¹, Minako Nakayama¹, Satoshi Ishii², Minori Taguchi³, Akiyuki Matsushita¹ (1.NIMS, 2.Tokyo Denki Univ., 3.Chuo Univ.)

Keywords:spinel oxide, fluorescence, transition metal oxide

The substitution of Co²⁺ makes ZnAl₂O₄ with spinel structure being fluorescence material. Interestingly, this fluorescence phenomena are observed for the excitation of visible light with the energy lower than the bandgap. We investigated this visible light fluorescence for the sample series of (Zn_1-xCo_x)Al₂O₄ and (Mg_1-xCo_x)Al₂O₄. The, crystallographic and spectroscopic characteristics of these sample series will be reported in order to clarify.