1. Department of Applied Chemistry Tokyo University of Agriculture and Technology Koganei Tokyo 184-8588 Japan
2. Tsukuba Research Laboratories Tokuyama Corporation Tsukuba Ibaraki 300-4247 Japan
3. Department of Physics, Chemistry and Biology (IFM) Linköping University SE 581-83 Linköping Sweden
4. HexaTech, Inc. Morrisville NC 27560 USA
5. Department of Materials Science and Engineering North Carolina State University Raleigh NC 27695-7919 USA
6. Institute of High Pressure Physics Polish Academy of Sciences Sokolowska 29/37 01-142 Warsaw Poland
7. Institute of Global Innovation Research Tokyo University of Agriculture and Technology Koganei Tokyo 184-8588 Japan