1. Key Laboratory of
Superlight Materials and Surface Technology, Ministry of Education,
College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, Heilongjiang 150001, P. R. China
2. State Key
Laboratory of Rare Earth Resource Utilization, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
3. Key Laboratory of Semiconductor Nanocomposite Materials,
Ministry of Education, Harbin Normal University, Harbin, Heilongjiang 150025, P. R. China