1. The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
2. Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia
3. Siberian Federal University, Krasnoyarsk 660041, Russia
4. Department of Physics, Far Eastern State Transport University, Khabarovsk 680021 Russia
5. Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
6. Functional Electronics Laboratory, Tomsk State University, Tomsk 634050, Russia
7. Laboratory of Single Crystal Growth, South Ural State University, Chelyabinsk 454080, Russia
8. New Technologies Research Centre, University of West Bohemia, Univerzitni 8, Pilsen 30614, Czech Republic
9. Department of Physics and Astronomy, College of Science, King Saud University,
P.O. Box 2455, Riyadh 11451, Saudi Arabia
10. National Physical Laboratory, Council of Scientific and Industrial Research, Dr. K. S. Krishnan Marg, New Delhi 110012, India