[1] Departamento de Ingeniería de Materiales (DIMAT), Facultad de Ingeniería Universidad de Concepción, Concepción,4070409, Chile
[2] Department of Physics, G. V. P. College of Engineering for Women, Andhra Pradesh, Visakhapatnam,530048, India
[3] Department of Physics, GITAM Institute of Science, GITAM University, Andhra Pradesh, Visakhapatnam, India