1. Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science & Technology, Baotou 014010, China
2. School of Mathematics, Physics and Biological Engineering, Inner Mongolia University of Science & Technology, Baotou 014010, China
3. Institute of Theoretical Chemistry, State Key Laboratory of Theoretical and Computational Chemistry, Jilin University, Changchun 130023, China