1. Department of Physics and TcSUH; University of Houston; Houston TX 77204 USA
2. National Key Laboratory for Precision Hot Processing of Metals; School of Materials Science and Engineering; Harbin Institute of Technology; Harbin 150001 China
3. Beijing National Laboratory for Condensed Matter Physics; Institute of Physics; Chinese Academy of Sciences; P.O. Box 603 Beijing 100190 China
4. Department of Mechanical Engineering; University of Houston; Houston TX 77204 USA
5. State Key Laboratory of Advanced Welding and Joining; Harbin Institute of Technology; Harbin 150001 China
6. Institute for Computational Materials Science; School of Physics and Electronics; Henan University; Kaifeng 475004 China