1. Scientist, Materails Science Division, Regional Research Laboratory (CSIR), Jorhat–785006, Assam, India (corresponding author).
2. PhD Student., Materials Science Division, Regional Research Laboratory (CSIR), Jorhat–785006, Assam, India.
3. Dy. Director and Head, Materials Science Division, Regional Research Laboratory (CSIR), Jorhat–785006, Assam, India.