1. Bayerisches Geoinstitut University of Bayreuth Bayreuth Germany
2. State Key Laboratory of Superhard Materials Jilin University Changchun China
3. Department of Earth Sciences University College London London UK
4. Frontier Research Institute for Interdisciplinary Sciences Tohoku University Sendai Japan
5. Department of Earth Science Tohoku University Sendai Japan
6. Japan Synchrotron Radiation Research Institute (JASRI) Sayo Japan
7. Center for High Pressure Science and Technology Advanced Research Beijing China