Institution: | 1. Key Laboratory of Transparent Opto‐functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. China;2. Graduate School of Chinese Academy of Sciences, Beijing 100039, P.R. China;3. Institute of Physics, ASCR, Cukrovarnicka 10, 162 53 Prague 6, Czech Republic;4. Key Laboratory of Transparent Opto‐functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R. ChinaPhone: +86‐21‐52412820, Fax: +86‐21‐52413903 |