Affiliation: | 1.Materials Research Centre, Department of Physics, N.G.M. College, Pollachi, Coimbatore, Tamil Nadu, 642 001, India ;2.Luminescence and Solid State Ionics Laboratory, Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India ;3.Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, 210094, China ;4.Department of Physics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641 043, India ; |