[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA
[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA
[3] Natl Inst Technol, Dept Phys & Astron, Rourkela 769008, India
[4] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
[5] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[6] Natl Phys Lab CSIR, Dr KS Krishnan Marg, New Delhi 110012, India
[7] Univ Rajshahi, Dept Mat Sci & Engn, Rajshahi 6205, Bangladesh
[8] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
[9] GIET Univ, Dept Basic Sci & Humanities, Gunupur 765022, Odisha, India
[10] Vikram Univ, Govt Coll Sailana, Dept Phys, Ujjain 457550, Madhya Pradesh, India