1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
2. Center for High Pressure Science and Technology Advanced Research, Changchun 130012, China
3. Shandong Key Laboratory of Optical Communication Science and Technology, School of Physical Science and Information Technology of Liaocheng University, Liaocheng 252059, China
4. Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409, USA