[1] Adhiparasakthi Engn Coll, Dept Phys, Melmaruvathur 603319, Tamil Nadu, India
[2] SRM Univ, Dept Phys, Madras 600026, Tamil Nadu, India
[3] Sri Sivasubramaniya Nadar Coll Engn, Ctr Crystal Growth, Madras 603110, Tamil Nadu, India
[4] Shizuoka Univ, Elect Res Inst, Naka Ku, Hamamatsu, Shizuoka 4328011, Japan
[5] Thiruvalluvar Coll Engn & Technol, Dept Phys, Vandavasi 604505, Tamil Nadu, India