1. Department
of Physics, Oakland University, Rochester, Michigan 48309, United States
2. Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
3. High
Pressure Synergetic Consortium, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, United States
4. College
of Physics, Optoelectronics and Energy and Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215006, China
5. Department
of Chemistry, Georgia Southern University, Statesboro, Georgia 30460, United States
6. Department
of Chemistry, Texas Christian University, Fort Worth, Texas 76129, United States
7. HPCAT,
Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, United States
8. MST-8,
MS H805, Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States