^aHigh Pressure Collaboration Access Team (HPCAT), Bldg. 434E, Advanced Photon Source and Geophysical Laboratory, Carnegie Institute of Washington, Argonne, IL 60439, USA

^bMaterials Science Division, National Aerospace Laboratories, Bangalore, India

^cGeophysical Laboratory, Carnegie Institution of Washington, Washington DC, USA

^dCenter for the Study of Matter at Extreme Conditions (CeSMEC), Florida International University, Miami, FL 33199, USA