1. Department of Applied Physics, Nagoya University, Nagoya 464-8603
2. Department of Material Science, Shimane University, Shimane 690-8504
3. Institute of Physics, University at Bialystok, 41 Lipowa str., 15-424 Bialystok, Poland
4. The Soltan Institute for Nuclear Studies, 05-400 Otwork-Swierk, Poland
5. High Pressure Research Center UNIPRESS, 29 Sokolowska str., 01-142 Warsaw, Poland