1. St. Petersburg State Institute of Technology (Technical University), Moskovsky, 26, Saint Petersburg 190013, Russia
2. Institute of Silicate Chemistry, Russian Academy of Sciences, Makarova Embankment, 2, Saint Petersburg 199034, Russia
3. Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Shizuoka, Japan